Thinking about what everyone else is doing and believing they are having more fun is robbing you of enjoying your life and discovering what brings you joy!
Miss out on purpose, say 'no' to constant doing, reconnect to activities and interests you had as a kid, and carve out time just for you. Use this time to hear what is happening in your inner world and connect to what matters to you. You're never missing out on something.
If you're meant to be somewhere else, you would have been there. Decide that no matter how you will spend time, it is worthwhile. Fully embrace the joy of missing out.