At 80 being able to get up in the morning and p & p, go out and plow snow in my warm tractor and my 15 year old cat that rides with me everywhere and of course my wife and all God's blessings. Go ahead and and a post "happines is" maybe your dog, horse, wife grand kids.
For me riding in the warm cab with my wife's fifteen year old cat on the hood would be happiness.
For me happiness is doing something well. That probably sounds cheesy. But be it building something, taking a photograph, cooking a dish, and many other things, I derive happiness from doing them not only to the best of my ability, but also with a result that is objectively good.