So I'm 18, broke and just moved in to my own apartment. Most of my life revolves around guitar and I try to get a good few hours in a day. Just to prefice, I haven't gotten any complaints in the month I've been living here and I'm the only guy in the basement level. I try to keep a decent volume, since headphones are gonna be a problem (input lag through the computer and general poor sound quality), decent enough that I can barely hear it if I stand 7ft away from the pc. But I'm paranoid about this stuff. 

Knowing my temper, and the fact that I've dedicated close to all of my time the last 2 years to guitar, I'm pretty sure I might blow up should the neighbors come knocking, and I don't want to make enemies of them. Am I the asshole? Am I in the green as long as I keep a decent volume. I should also add that part of the reason I'm paranoid is because my upstairs neighbor is severely mentally ill (she hallucinates neighbors plotting against her),  so I'd definitely not want to get in a fight with her.