I will do it again even though I know it was wrong!

Sometime, i will make the wrong decision and do the wrong action again even i know it was not right to do.
People like me is the ordinary normal people who live in the world, i know i not in the worst case as compare to other people. But, doesn't it say that don't compare yourself with others because I am not you , you are not him, he is not her...
The most thing make me feel frustrated is that 'I know it shouldn't do it this way!' It seem like many peoples' problem but this is my blog so I will just concern about ‘ME' only.
I know I shouldn't eat so much as I already overweight...
I know I shouldn't keep study novel as my final exam is coming soon...
I know I shouldn't feel hurt of what people said as I know the truth...
I know I shouldn't angry of what people did as I know they don't mean to do it...
I know I shouldn't cry for the movie plot as I know it's just  a movie...
I know I shouldn't promise to somebody as I know I can't make it...
I know I shouldn't spend money have fun all the time as I know the next day my purse will be empty...
I know I shouldn't lie to people who love me so much as I know they will get hurt...
I know I shouldn't trust the advertisement as I know they just want me spend money...
I know most of the things in my current life that I shouldn't do but I just don't know how to learn to stop it.
Maybe it just call 'It's life man!' or I just a stupid who do not learn to be smart a bit.