If you don't have a drive to succeed, what do you have? Nothing. I totally dig you on that.

"I'm tired of eeking my way though life."
-- Lloyd, Dumb and Dumber

I've dated a few girls who were perfectly happy eeking their way through life. They never wanted anything. Its weird...and it eventually sickened me.

I don't think you are being selfish at all. People change, people grow apart, its natural. It would probably be unnatural to force yourself to stay in a relationship that you aren't benefiting from.

Sexual relations are a HUGE part of relationships. If you are not sexually compatible, I think its time to move on and find someone new.

Pick up a progressive thinking book on relational psychology...it will make you feel better...