Heard from a 93 year old woman in good health but not able to do as many things as she'd like due to age:
If you want to do something, do it now, do it twice even, do it lots!
Heard from a policy expert in state government:
If a job keeps you awake at night, it's time to move on.
Heard from someone who has moved over 20 times when asked for wisdom about moving:
Do it yourself. Be with the movers in the truck, packing boxes. Ask them what they need you to do. But be there.