Oh sure, a little bit. But then I'd be wondering about what if I'd done things the way I actually did them, so maybe I'm regretting that in some other time stream. I try to be stoic about it.

It really comes down to whether you have more of a drive to be happy or to be right. On bad days I often wish I'd opted for the former, but I enjoy cultivating my inner garden and it gives me pleasure to see ideas grow over time.