BCT is not a mental game.
It is not easy, but it's the likely the easiest thing you'll ever do in the military. All you have to do is be in the right place, at the right time, in the right uniform, and have an open mind.
If you ever want to join, do it now. The longer you wait, the more behind the curve you will be. If you're a semester away from a bachelors, finish. If not, let the GI Bill cover your education after you get out.
I went to school for 2 years and fucked around with retail jobs before joining at 23. Now I wish I would have gone in at 17.
With regard to BCT being "easier", okay. Send me some fucked up, fresh AIT graduate and I'll either fix him (if he's a good soldier) or get him out of the army (if he doesn't ant to be here). BCT showed me what the army is like, AIT showed me what my MOS is like, and my Unit taught me how to combine both to become an asset. The latter is where the real learning takes place.