My two biggest ones are nail biting, and trying to hard to get involved with people...I'm one of those that has always been the go to guy...and when i KNOW someone isn't at there best, i try to help...even if they don't want it...I guess it really annoys people sometimes, but, i feel if i CAN help them then it's my responsibility, even if it means they have to share something personal with me, which a lot of people are against sharing personal stuff...And due to that I've accidentely pushed away those i wanted nothing more to help...I suppose you could call it more of a flaw then a habbit...but...those times when they let you in and you really do help, make it all so worth it...