If it's the 9-5 hours, you are likely working. What happens from 9-5 (or whatever your work hours are) is very important as your job is likely your livelihood. What happens from 5-9 is also very important. The 5-9 hours will determine where you can go in life. Are you doing things that will create a better tomorrow? Including things that bring you joy.
Oh yeah, and don't forget to sleep well too.