Life is happening all the time, your life started when you came out of your Mama. Its not something you achieve by a certain age. We always just have to do what we can with what we have in the moment. Time doesn’t stop for worry it keeps going. So when we grieve what could’ve been or wish things were different, time isn’t paused it keeps going. You certainly aren’t alone in the way you are feeling because I hear people say stuff like that all the time. I feel like that too especially with my high school experience. But Im never going to get to redo it. Thats okay, because I still have a lot of life left to make friends and enjoy myself. Try to focus on goals for the future and take care of yourself in the now.