Self-care isn't going to remove all the various external difficulties in the system, but it will bolster your natural resilience and renew your energy for the tasks at hand.
Recognize that you need to recharge regularly. You will have more energy and presence in all other areas of your life. It is not selfish. Pick one area you know you'd benefit from if done regularly.
1. Prioritize it and put it on the schedule.
2. Keep your promise to yourself.
3. Have fun rediscovering what is...