Something you're proud of.

Is there something you're proud of but can't just randomly mention it to others because you'd sound narcisstic? Do tell me.

For example I like to think I'm very good at arguing, just winning a disagreement in general. I've never backed out of a debate whereas about 3/4th of people I face always back down. On some occasions I've even realised I was in the wrong halfway through. This may sound horrible but I manage to make the other person believe they're wrong still. Call it manipulation, I won't argue with that.