Shazam - I've definitely gone through periods where I just stopped caring and thinking about it much at all but all that ended up doing was having me go a month or more without getting an erection once so. I'm not sure I fully understand what you are saying though.
I'm not implying you should forget the idea of having sex... haha, I kinda have alot of self actualization material in my mental library, so I suppose I made a leap or two in the explanation there. What I'm suggesting is that you find some way to shut your brain up. Since this is a HEALTH forum I'm guessing you don't have alcohol on your to do list, which is good, but if the problem isn't low T or low DMT (or thyroid problems, I guess), then supplementation might not be your cureall. In fact, it probably isn't ANYWAY, though if it is one of the former you should work on that problem in addition to shutting your brain up.
Start working out. I notice the periods when I work out my libido goes up. Definately gonna get back on the horse this week. I don't just mean cardio. Do a warmup of like 8 minutes running before your workout, and lift weights. Something about lifting a weight that at first glance you believe to be too heavy for you just reminds you that there are a ton of hot girls out there to fuck, and you are just the man to smash through the drywall and do it. As a sort of funny aside, my goal for strength is sorta unconventional; I wanna be able to rip off a car door. I have no idea how useful that would be, but I wanna be able to do it. Be careful of overtraining, as a last note. Start slow if you don't already work out. But start. Gradually push till your find your limits. Creatine and handling your diet is all you'll need in the way of supplements to start.
Eat enough. My current diet ratio is 35protein/35carbs/30fat, with 33 percent of that being saturated fat from eggs, meat and coconut oil. It's a bit of a weird ratio, and it will probably need adjusting later, but the important part in relation to T is getting enough fat/sat fat. And get enough cholesterol, too. There's a reason it has a daily value, and that might even be a little low. Eggs and meat are good sources there.
These last two things should go a LONG way to boosting that drive.
How often do you beat off? Try to limit it to 24 hour intervals at the most. If you watch porn, stick to POV stuff the majority of the time. When you do, take your time. Don't take many breaks, and keep a steady rhythm, changing the pace when you see fit kinda like actual sex. Heh. This is not the kinda thing I was expecting to discuss here. Anyway, don't do it because 'I guess I should do this, to boost my sex drive', do it for ENJOYMENT. Almost... DOMINANT, even if it is a solo act. Carry this attitude over to sex, too. You won't see many opportunities if you don't. This is gonna sound funny, but go to freakin' town. Thrust if you like. You might give yourself a vertical indian burn if you're too exuberant without some kinda lubricant. Hey, that rhymed! Look into kegels as well. Aaaand that just about sums up all that I care to mention on this subject.
That should cover the quick fix basics. Now, a further expansion on what I was saying. Alot of people think too much. Waaay too much. Not as a function of planning or forethought, but compulsively. To the point that something as primal and enjoyable as sex, almost can become a function of image maintenance and validation seeking. Because it's "what I should do", in some of the worse cases.
This is why we get people who are afraid of rejection, or who don't even try due to some kind of mental block or discouragment; it's almost like a voice in their head, this incessant stream of thought. Now, there are a couple ways to shut this the fuck up. Exercise, in addition to telling your hormones to wake the fuck up and all that nice endocrinological stuff it does, will indirectly shut this compulsive thinking the fuck up, because you're exerting alot of energy.
Sometimes you have to choose between "Run that extra mile" and "Imagine future scenario XYZY1020131", or "Remember memory number 1902139 in data vault 12. Emotionally react to it." If you've ever really pushed the boat out endurance running, or even pushed yourself, you know EXACTLY what mile I am talking about. And if you haven't, well, you will. If you choose running that mile, you will be forced to stop thinking, and start paying attention. Let it happen. At first there may be a little resistance to really waking up and snapping out of the walking thinking coma alot of people seem to be stuck in, but let it happen. There's no way to force it to happen, you can only let it happen. This does not mean 'become fucking stupid'. In many ways you actually become smarter, as you aren't just constantly walking around in old thought patterns, wasting energy on looking for external gratification to tell you that you're all cool, or wasting it on feeling insulted, perceiving slights and maintaining an image.
Now, the most direct way to stop thinking compulsively (Not in the sense of OCD, but in the sense described above, constantly jumping to past and future when you're not actually consciously deciding to remember something, imagine something, or plan something out.) is, to quote the author Eckhart Tolle; "Be in the now". Sounds kinda vague, hmm? There's sort of a reason for that. If you have too many expectations on what stopping the stream of thought is like, you're going to be THINKING about those fuckin' things for hours trying to sort it out before you even DO IT. A more semantically specific way to say it would be "Shift your attention/focus to the present moment, to what you can see with your eyes, hear with your ears, and feel with and within your body."
Of course, for somebody who is just grasping this, or willing to try it because it sounds novel or reasonable, that can be a little tough. Just be sure that you're meeting the criteria above and you should be alright. NOOOO thoughts should take up that attention. If you're thinking, it should be because you decided to think. This is the method I've had the most experience with so far. It's sort of a form of active meditation, and can be done ALL THE TIME. If you can do it during a heated, dramatic argument (maybe with family), it's a sure sign you're getting really good at this. I haven't really tried that yet. I think I will.
Another method to 'snap out of it' that I've found, but have not tried to the extent of the former idea is mindfulness meditation, also known as 'vipassana'. Don't let the name throw you off, anybody can learn to do it, there's no religious immersion necessary. Mindfulness in plain english is a good 'how to' on that subject. Should be free, just google it.
Also, in addition to working out with weights, a warmup cardio, and cardio, stretch. Keeping flexible, oddly enough, will help your energy levels. Let's see, what else do I have in the mental bank. Oh. Duh. LOOK AT HOT GIRLS. NUUURRR. Pretty obvious one. You know that cutie who you might go on the same bus route as? Don't sneak a furtive glance every once in a while, keep eye contact. Stay in the damn now when you do it. Don't be afraid to check them out a little, even right in front of their faces. If they get all mad and shit they're just frigid anyway. Either that, or they're trying to get you off guard to see what you're made of. You can kinda tell when it's that one. And don't try to repeat this crap in your head as a 'justification' for doing it, not that you necessarily would. Just stay in the now while you look at them. If you do, it will become pretty obvious why you're looking at them to both you and them. If working out and all the other tips didn't get your motor going initially, you can bet that firing up some chemistry will, and in a HURRY. Hell, even remembering (on purpose) times when you had chemistry going with a girl will get your motor going a little. It gets mine going =P. But it's no substitute.
Heh, typing that kinda felt like building something. "The great wall of text".