I felt that way sometimes between 19-24, Especially when I seen other people traveling to other countries, getting multiple degrees, or starting their own business at that age.
But its YOUR life.. I got a little older and stop really caring what other people were doing and starting do what I wanted. I know its cliche but your life is what you make it. Can't sit around throwing pity parties for yourself.
Also if you feel like you are wasting your life, try doing some stuff for other people. That shyt lowkey makes you feel better. I remember I used to fknock down broads that weren't up to my normal standards and used to think "I probably just made her day, week, month"
You know that feeling your have after you fukk a chick that may be out of your league? You can give that feeling to others breh