Remember the tool of “Yes. But first...”
Kids ask for things they want ALL DAY. To avoid saying”no” all day, (and avoid tantrums) don’t say no. Little One doesn’t touch her dinner except for the applesauce. Then she asks “Mommy can I have more applesauce?” Tell her “Yes!” “After you finish your meat and vegetables.”
Celebration and acknowledgment: Make a big deal over little-big things and teach them the same: getting their braces off, or a cast on a broken bone, a friend gets a new car, etc. Always acknowledge the sad that someone is going through or the difficult situation. Applies to all ages.
IMPORTANT: If you borrow money from someone pay it back as soon as possible. In full. If you borrow an item, return it in excellent condition. I’d say if you borrow a car, return it with a full tank of gas but hopefully by the time you’re driving there won’t be any combustible engines. So return it fully charged!
One regret I have is how sure I was that I was in the right. Looking back I can see now that there were plenty of times when I was the a-hole. I wish I had been able to be circumspect.
Teach your pets they can trust you. Take care of them. Treat them with tenderness. Teach them how to behave. (Unless it's a cat. You can't teach cats anything.)
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.
Sometimes I think the best way to take care of them is to teach them to take care of others: Littler kids, sick or disabled, those who’ve been left out.