How Do You Manage Your Own Energy?

At first I was at 20 clients when I decided to leave my full time job. And so there was like how many could I take so I really had to play with how many clients I could manage. It's something that I'm still actively figuring out I don't have the full answer yet but that's okay. How do you really take your own advice and give yourself the time you need to fill up your internal cup? This was so much of the work that I have had to do as well for myself especially when we were taking one on one clients.