Can chronic boredom and emptiness be put into remission?

I’ve tried a lot of hobbies as an adult and nothing stuck. I have no intellectual interests. I don’t even know how to account for my passage of time, except smoking a lot of cigarettes and going to work. 

Work is helpful, like I’m bored there, too, but it’s more tolerable. I go through the motions of my responsibilities, which are pretty simple, and so far time passes pretty well. Which I’m really grateful for and I desperately hope continues.

But my days off, there’s not a single thing I want to do. And when I force myself to do things, when I can muster it, like go on a walk or color or take care of things on my “to do” list, I don’t feel any better.

I don’t know how to cope with feeling this way all the time. It makes each day painful and the idea of living a full life of it is unbearable.

What do I do?