Cats

I mean, I tend to go down the drinking route. But thats not healthy.

IDK maybe go for a hike with friends/family/pets every now and then. Start playing a sport like volleyball, football, badminton etc. Start learning a musical instrument.

All you have to do is workout. Don't you know, when you sweat, you feel better?

I don't know. Mine was yeeted into space 20 years ago.

A good salary

What ASouza said.

I've never really had joy in my life so I don't know.

I am literally the worst person on Earth to ask, I need the same advice TBH

Take up a new hobby, go exploring, or date someone new. My mom took a jewelry making class at a local college. Now she spends a lot of time making and selling trinkets on the internet.

Joy is a state of high energy consumption. It cannot be maintained therefore for long. You have to reload and relax and regenerate. So I guess your state of tiredness indicates a lack of energy and that causes a lack of joy. In order to be free enough to enjoy things and reload the batteries the depressing routines must stop. They also cost loads of energy. A boring schedule, repetitive responsibilities and uninspired tasks only cost energy, they do nothing to back you up. So I tend to break the wheel of schedule and running the same rails by hopping away from rails and the command of the clock.

Time to spice your life up, start producing and selling meth!

Find the US equivalent of BorrowMyDoggy.Com

Introduce a new change. Could be as small as buying some new clothes, socks, shoes, new technology (retail therapy). Try cooking a new food. Rearrange your furniture. Hang up some new art. Put a new plant in your garden. Try a new brand of almond milk. Try a new restaurant. Go to a local event, maybe there's smth cool happening at a museum or a night market near you. I should prolly take my own damn advice tbh