How well do these Engineer tips fit your thinking about moods?
Never:  Never use it: 
Try:  Might try it.
Use:  Use it as needed
Tell: Tell it to people who need it

You can't change the past.  You can change your future.  So which do you focus on?

How can you find satisfaction if you don’t know what you will be satisfied with?

Worry is no substitute for planning.

If you want to find the Hunter, you have to know the game.

Look for cues that influence your moods.  He who controls the cues directs the story.

Worry grows from feeling powerless.   What can you do beyond feeling powerless?