I stumbled across one of the pictures I am most proud of.
Being proud of something doesn't always equate to having the best thing to be proud of. Sometimes it's how you get to that point that's the most important part. The story or struggle behind your photo/achievement. You don't always have to win to be proud of getting over the finish line.
This is down to you feeling like you hit a milestone after a lot of effort and that you were now a photographer after a long time of being a person with a camera. I've read your other posts on getting started and it wasn't overnight. It took years, practise, hard work and investment to get to here so you should be proud of that fact.