Not gonna go down the, you're depressed, route but are you missing some challenge in life?
I read this and a lot of what you describe resonates. I've lost direction a few times and none of the set goals, meet people, focus on human relationships, exercise, ever helped me but it is cyclical as someone else already said. Sometimes you just get to feeling there really is little point or impact.
Things that balanced me out in the past:
Learning how to service and maintain my car. Knew nothing about it before and had a sense of achievement after - I know something useful now.
Took up drawing for a bit, still crap at it but I created something. Felt like a productive use of my time.
Built my own pc
Learned martial arts
Read a book: Zen and the art of motorcycle maintenance is one everyone should read.
Study a new subject - not formally, just ask how something works and go research, learn a language, do something out of character. You sound bored so do something different.
Don't know if any of that is helpful but sometimes just deciding to do something you haven't done before can give you a new perspective on other things. Hope you feel back in balance soon.
