Is it normal to do something you know is wrong?

Alright people refresh my mind by telling me somehing I don't know. When it comes to making choices, I know what is right and wrong but I'll still do the wrong if I wanted to. But it looks like I'm unaware of the consequences and I'm stupid when I know what Im doing. When it comes to being hypocrite, I know there's a difference between doing something that you know is wrong and doing something that is wrong after saying you wouldn't do it. For example, if I said everyone just likes to party and get drunk, what a messed up world, and then I do it does that make me a hypocrite? I think not cause I just know it's wrong and probably have had a negative attitude towards the subject, but didn't say I wouldn't do it.