An advisor told me, among other things, to look at my to do list and think, how much and what MUST be done today? If it can wait a day, remove it. Look at the long haul and your energy level and what you need to do to take care of yourself.
Then cut out everything that isn't necessary. Leave it on a separate list. Maybe later you can delegate it or choose to do it as things change.
Lists are not military orders. They're helpful reminders and guides. You can question them, change them, sort them differently. Think, on rough days, what MUST be done today? And do it. You still have tomorrow to deal with the rest. In life, you must treat yourself with loving kindness and that includes patience with your limitations.
When you want something to the utmost, make the extra energy and effort to do it as a MUST do, of course. But learn to forgive yourself if you can't do it all and all at once. The great person carries compassion, and that begins with compassion for yourself before you can understand how to give it to others.