For me it’s regex-fu, SQL-fu and perhaps Google-fu. For one of my kids it’s Roblox-fu and the like.
I’ve always felt a bit of imposter syndrome at work. I always have to remind myself that part of why our team work so well is that everyone has their own specialties, those things, products, aspects, systems that they know more innately that others. And that’s OK. We also all share an innate desire to help each other and for our team to succeed.