For me, it was the performance anxiety of social interaction in the context of sales and business. I couldn't give a shit about perishing in a plane crash as it was obvious to me I had zero control over the outcome. A screwed up business conversation leading to lost opportunity, revenue and enployment, that is what gets me over thinking! That or a personal slight where I thought someone was taking advantage of me like they were a bully. That gets me going!

Anyhow, knowing to draw the line when overthinking surely is a bit of a superpower.