When an event comes up that you’re sincerely not interested in going to, or you are already maxed out for time, say no in a gracious way to the person who is asking you for your time and energy. For example: I appreciate the invitation, but unfortunately I can’t today. I hope you have a great time! It can feel uncomfortable at first, but in time it’ll become easier, and it is an important part of respecting your own needs and wants.