Most important phrase I learnt. "Can it wait till tomorrow?" Keep you work life balance healthy.

Most common answer I heard for questions alike: "No, it can't". :/

The answer is No if you don't ask.

Best trick i learned from a fellow dev.

" i'll put it on the list "
- how come my [thing] isn't at the top of the list?
" we prioritize items based on urgency and potential revenue, decided by the management team, every two weeks"
- oh.

Sooooo many 'urgent' tasks were suddenly not as urgent anymore.