Gratitude.
Simple exercise. Try it for a week. I'd bet you'd be noticably happier.
Before getting out of bed, picture each of your family and remembers and how much you value (love) each other, how you color each others lives, not worrying about disagreements, just accepting the reality, and being thankful that you have that relationship. Then find another, and another, and another. I usually I start with the closest family, but sometimes get to a distant cousin or a long lost friend. If I forget (or need to pee), I go back to bed and do that bit of gratitude. Every day.
You get the gratitude brain circuits firing, then you continue, "wow, I press a button and have boiling water for my tea...no need to build a fire, or I could drink the water without worrying about getting sick" Those are just examples that may or may not strike you. But if you try, there are a million things you can think of that gets the gratitude circuits firing.
It might sound fake or hokey, but you'll catch yourself being grateful without trying...and happier.