Make time for yourself, even 5 minutes a day.
Don't always put yourself last because you will never find extra time. Setting care for yourself as a daily priority isn't selfish.
You allow yourself time to care for your outside; to shower, brush your teeth, to get dressed... Allow time for your inside, too.
Quiet time, learning time, happiness time -- whatever that is to you.
It's all part of keeping your emotional and mental states clean, refreshed, and healthy.