I think it's very important to have a feedback loop, where you're constantly thinking about what you've done and how you could be doing it better.I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.
It's not about being perfect, it's about being better than you were yesterday.
"History is not the past but a map of the past, drawn from a particular point of view, to be useful to the modern traveller."
We are all of us made by what we have done, and what has been done to us.