Do what you love and you’ll never work a day in your life.
I get up at 4:45 AM every morning, learn until 7, daven, head out to school at 8, go to class/study/research/write until 5, arrive home at 6, spend some time with the family until 8, learn until 10:30, daven, and spend some time with the wife, and get to sleep by 11:30-12. Pretty long day of pretty taxing learning and working, but I couldn’t possibly enjoy it more.