Maybe it's different for people who owned their own businesses. Back then I didn't have a boss, per se, and I don't have one now. My time is still mostly my own. I schedule my work to suit my schedule and my clients are cool with that.

We planned to do this consulting as part of our retirement, both to help those clients and as a favor to ourselves. We quite enjoy it which is no surprise since we liked our work when we did it full time.