Rethink your emotional state. It can be okay and even really healthy to have both comfort and pain, both satisfaction and longing, both happiness and excitement and sadness. You can appreciate all that you have, but long for something different, something more.
Pick up something you always wanted to do but never had a chance. Play guitar, adopt a dog/kitten. https://esacare.com/emotional-support-animal-need-reasons/ Get healthier, explore the beautiful earth. Try a new course or language. If you involve in different activities and try to keep yourself busy, you'll have a change and peace of mind. You cannot achieve everything in a day. You need to work on it, plan it, and complete it.