can you stop yourself?

do you have the power to stop yourself? I dont. any action, small or big, I cant seem to stop myself for doing it, knowing that I will hate myself for it. Its either I have a block on my logical sense or no block at all. I do things that just make me disgusted of myself, things I have to beg for forgiveness, only to do it again tomorrow? does anyone else experience this? its like I dont know who I am- dont know who this person is inside of me. someone I cannot predict.