How to quit smoking pot?

I know i defenitely need to quit weed and i want to but its going to be so hard because its gunna b sucha lifestyle change. right now all i do with my friends is smoke pot , if i quit its gunna b awkward when i chill with them cuz all we ever did was burn. i dont fit in much at school so its not like im busy with parties and going out all the time, i dont know what im gunna do if i quit. what do ido?