I need help to stop a current habit...?

Well, I can't really specify in public... I just know that I'm doing something that it's wrong and that I shouldn't be doing... I don't think it's illegal but it's ethically wrong. It's not drugs or cheating, but it is like an addiction, that I would like to get rid off... I don't want to go to a psychiatrist so that he/she can sit on a chair and say (uhum, uhum... yeah). I just would like any ideas. I don't think it's an addiction but it's pretty common, and I would like to know if anyone could give me an insight about what to do to fight somehting that you don't want.

I know, the look for God answer, and I respect those answers but don't need them right now since I'm currently doing that. I would also like if anyone could go into any psychologycal/mental/physical solutions with getting rid of an habit, unethically correct related, that you want to get rid of...

Thank you for your help... may god bless you...