Help me quit smoking weed?

i used to be the biggest stoner in school. it was just me. when my name was mentioned everyone thought of marijuana. but now i quit, im about 4 months clean but there is A LOT of temptation to go back to my old ways. first of all my friends even started hanging out with me less because one of the things we enjoyed doing together was smoking pot. i listen to rock n roll and whenever i listen to music it brings me back to all those times when i was high. everyone is always calling me to get high and they totally disrespect the fact that i quit!!! also every tv show i watch, every movie, everything, has marijuana in it and it just makes me think back to when i still smoked. i guess i just kinda feel like i've lost a big part of what was me. and i deffinately dont wanna go back to it, but i feel really strange without it. mrijuana was pretty much my social weapon. it is what kept me and my friends close, it was our main topic of discussion and everything. now i just feel like people dont really wanna hangout with me anymore... as if i became a goody two shoes or something. i feel like they feel that i changed for the worst. how can i stop feeling all this crap, and gain back my friends and the confidence i had without going back to that nasty habit of mine