I believe strongly in that what goes around comes and that you reap what you sew but I don't believe in the part of Karma that says if you do evil things it will affect you in the next life. No if you do bad things it will negativity affect you in THIS life not the next life (that is you even believe in reincarnation which I DON'T) otherwise how can you learn to change and realise your misgivings if you don't remember doing it in the first place since it was in a previous life!?