Breakouts and scars!! help!?

I used to have super clear skin and now all of a sudden ive got nasty *** break out zits and nasty *** acne scars and oily skin lol idk what the hell happened. is it lack of exercise? i love water and hot tea also so im always flushing my system out but i love caffeine, i use Aveeno clear complexion foaming cleanser in the morning and night. i ove fruit and veggies so idk if its my diet and i havent been wearing makeup latley or sleeping with it on if i wear it. can anyone please give me tips and what not on getting my awsome skin back please? p.s ive also been getting chapped lips alot but im useing chapstick and its not doing much of a help. thanks a mill!