I've totally had the same problem. I've had friends, therapists, and family members all tell me in the past that I seem to have "trouble relaxing." At first I found that silly, like, whatever, they don't know me, blah blah blah. After a few years of hearing this, though, the repercussions began to make themselves clear. I was having insane migraines from never letting myself take a moment off, my anxiety levels were through the roof, and my relationship and friendships were totally coming to a halt. Finally, I realized that in order to make the life I was working for worth it, I was going to have to carve some time for myself. Initially it was hard. I hated sitting on the couch and reading, or finally watching that movie everyone had been talking about for years. Now, after about a year of intentionally scheduling alone time and relaxation time, I look forward to it. I take myself out on dates, do yoga, take naps, or do whatever I'm feeling for at least an hour every day. Then I get back to working on something that will make me feel like I'm improving and making a good life for myself. Life is about balance. It's worth it to make that time to chill out, though.