How do you know for sure that God is convicting you?

It's simple: You don't... Religion is a funny thing because you can only follow what information you are given...There's no creating new stories or parts to add to The Bible. Only a fool would claim to know what any "God's will" is. Christianity is based on a book written long ago, so I doubt anybody would ever know if their God were convicting them or not... I know this doesnt help, but as far as I know, there are no possible ways to be sure, and nobody is even certain if there is really a God.