Take Good Care Of Yourself, You Belong To You
Think about everyone you look after. A spouse, your kids, the pets, the people you answer to at work or the ones who answer to you. Somewhere in that list, your own name tends to go missing. When you leave yourself off it long enough, resentment creeps in. Put yourself back on, and that resentment tends to shrink, sometimes to nothing. Caring for yourself first is what gives you the strength to then care for other people, if that's what you choose.
The forms this takes are small and ordinary. A bubble bath or a hot shower. A nap in the middle of the day. Reading a book, watching a film, sitting through your favorite channel. Some people go hunting; some play with their animals. Looking after your body counts too, down to brushing and whitening your teeth. Call a friend you like and talk for a while, or meet that friend for lunch. Pick up a hobby you've never tried. (Turning that hobby into a business, on the other hand, might pile on stress rather than lift it off, so be careful there.)
A lot of us don't actually know ourselves all that well. Therapy is one way to work on that. So is sampling different hobbies, joining groups you've never been part of, meeting people you wouldn't otherwise have met. One caution: if any of this leaves you more wound up than before, ease off the new activity, or drop it entirely. And if you'd tell a friend to take good care of themselves, sit with that advice for a second. Whatever you'd do to help that friend understand who they are might be the same thing that helps you understand who you are.