You spend your time focusing on the well being of others. Whether that is for your job or taking care of family and friends.
If you don't put your own needs first then over time you will become less effective at caring for others. You are also likely to start suffering from fatigue and burnout.
You'll stay fresh and focused when you have taken the time to assess your own needs both in terms of your health and your goals and dreams.
Make some time for you and keep being the best that you can be.