So here's the deal: Since you seem to have lived for others (a maxim I used to believe when I was 16) how about putting Yourself FIRST. After all, if not You, who will live the life You want to have and lived?
And believe me, it will relieve much your stress. NOT bcz you re being selfish, on the contrary. When we do things for others that they need to learn-to-do we Deprive them of the pleasure that comes from achieving by Yourself.
We only get one shot at living, let's live the way that helps maximize joy of living -- by letting others achive their aspirations, making life more colorful.

So Promise yourself by starting the simple achievable pleasures of tasty healthy foods to Playful vigorous activities And at least one Mentally challenging exercise. I do wordle game in New york times that renews at midnight each day, Some logic, vacubularry and sheer pleasure for 15 minutes.
Promise?