Don’t believe in working less :(

I really want to adopt the belief that I can work less and be more productive. Right now, I do work a lot and feel like that’s how “it should be” if you want to be successful. I know that it is just a thought that I heard often as a child and adopted it. I feel like it’s cheating/being a lazy person not to work hard and work many hours. I make good money but I know that other people get twice as much done in the same amount of time and make twice as much money. I want to also work less and make more money but feeling bad about it and as if it is “wrong,” it is “cheating/dishonest,” and I have to “deserve it by working hard,” makes me go to bed feeling exhausted and not spend enough time with my family or do things I enjoy.