Why Am I Like This?

I (M25) tease my wife (F24) way too much. We’ve been married for 3 years and are very close. But I go overboard and joke about her insecurities in a way that isn’t meant as spiteful but is most definitely hurtful. For context, I adore my wife and we, for the most part, have a great relationship. I just keep on doing this even though I know it bothers her. She laughs it off most of the time but I know. She finally brought it up and how it hurt her and I completely understand. I just don’t know why I am like this. I love her and think she is the most beautiful woman in the world. But I keep on making this same mistake. Maybe it’s the culture I’m in at work shining through me. And that isn’t an excuse because I hate being the target of a joke based on my insecurity. How can I actually stop doing this and fix it? This feels so stupid bc the obvious answer is just stop. I just forget and get caught up in the teasing.

TL;DR

Can’t stop poking at my wife’s insecurities to the detriment of our relationship. Why am I like this and how can I fix it?