You know better

You know better. You are smarter than that.
You clearly know this is wrong.
You know what's the better thing to do, but still you don't wan't to do the 'right' thing.
For once you wan't to do the stupid thing, even though you know it is the stupid thing.

Many other people does the same, but the difference between many of them and you, is your knowlegde saying that it's wrong.
Having the knowlegde to ssay it's a bad idea, can really lay a preussure on you.
It makes it much more difficult just to do what you wan't, because you know it will have it's consequences.