[brailsafe]

I think "Could I do better/more?" is just a dumb question. As an employee, I have no plans to ever ask that of myself again. I'll get some things done that I set out to do, sometimes they'll take more or less time than I think, and the rest is either neutral or margin. There's no point in doing more. But you're right, you need a measure of what the right amount is, and I think that varies and can be hard to pin down.