Have worked in IT troubleshooting hardware and software problems for over 30 years. Addicted to coffee and logic. (not necessarily in that order). :-)
Words of wisdom:
Your reach should always exceed your grasp.
If it's easy it's probably not worth doing.
When juggling, if you aren't having a hard time keeping 'em all in the air, you probably don't have enough balls.
Of all the things I've learned over the years the two most important have been
Polya`s approach to problem solving and how to find out what I don't know.