Always have a 5 year plan. Be thinking of goals you want to work towards, however big or small. What inspires you? What drives you? What do you want to accomplish or cure or solve?
Have a yearly “review” right before school year. Raise allowance as appropriate. If they want more money, they’ll have to take on more responsibilities.
Stuff is gonna happen! They will make incredibly stupid choices and get into all kinds of trouble. Take a beat. Be radically merciful. THAT is what they’ll remember and that is the lesson they’ll learn.
The secret to getting sinks and surfaces to shine is to dry-buff them after you clean them. Keep a soft clean rag or washcloth around so you can dry fixtures and sinks and counter tops.
(They should be cleaning their own bathrooms by this age.)
You can forgive someone without speaking to them. Or you can move on without forgiving. Closure isn’t necessary to moving on. The only thing necessary is to move. Move your body, change your perspective, go on a trip, go to a new coffee shop, just move.
Purpose is more important than happiness. Having a purpose (or looking for it) will save you. (And sometimes finding a *new* purpose is what you need.)
Encourage creativity, science and engineering: Make a craft station / work bench for projects. Fill it with all kinds of art supplies, engineering kits, tools, pegboard, etc. Stock safety equipment like goggles and make sure the area has good lighting. Lots of ideas on Pinterest, etc.
Keep stories about younger years to tell them later: You used to call yellow “lellow” etc. Ten years from now you think you’ll remember this stuff but you won’t.