The meaning of "Taking care of yourself"

I see a lot of messages about taking care of yourself, and I think I have a better understanding now. It's not just being selfish, but also to help yourself so you can continue being a caregiver, especially if you are a sole caregiver. Many people say not getting enough sleep is very important, but here are a few things that I have realized.

• Still being careful about not getting COVID-19. It's endemic now, and people are still getting it. Dr. Robert Wachter (age 66), who is famous in this field, just contracted the disease, ending up fainting when taking a warm shower, and hit his head and needed care. Even knowledgable professional still suffer.
• If you are out of time and are in a hurry, drive carefully, walking up and down stairs carefully, look to avoid getting over by careless people riding electric scooters. If I get hurt, who can take your place?
• All the regular common sense about good self medical care, nutrition, sleep, stress relief. When harried, these things may get deprioritized, but one has to remember them.

It's such a common phrase in these forums, I took it for granted, and did not realize its importance and the consequences of neglecting it.