We have many days when we give of ourselves to help others. There is nothing wrong with having a ME Day. Take a bubble bath, paint your nails, and put on something you haven't worn for a while. That's what works for me.
In hypnotherapy school, we were taught that the best way to feel better is to change your thoughts (think about something else), change your activity (do something else), or change your environment (go someplace else). Just taking a short walk outside and enjoying Nature changes my thoughts. Now the weather is warming up, I will be doing it barefoot and reconnecting with Mother Earth.