I ask myself this question fairly regularly (weekly mostly…). It doesn't have to be a big win, anything that I think is a positive improvement or something I'm happy/proud about. I find it help keep me focused on the positive/good things, and helps me better handle the negative/less-good things….
So, I'll go first! My recent win is publishing my third Udemy course this year. I had a set an ambitious goal to publish 4 in 2024, and pushing the latest one out the door felt great!