I have a running list of "accumulated wisdom". Most have to do with maintaining momentum (because...life). Here are a couple items (trying not to repeat other comments).

* Don't worry about things, do things

* Set goals to "good enough"/iterative development

* Treat failures as false starts & learning experiences (training exercises)

* Don't focus on how little time you have, but on what you can get done in the time you have

* Start the day with an unpleasant task, to get it out of the way ("eat the frog")

* #1 underlying principle: Be proactive (and therefore stay in control)

* Use habits to: Reduce processing overhead, Simplify things, Reduce chances for getting off-track, Reduce ability of subconscious to derail

* Focus on what you are responsible for

* Take small steps