That sounds like me back in my teenage years. I thought I was a complete loser that wasn’t good at anything. The vast majority of these negative beliefs are false, but sometimes you need to take a risk and take on some challenges that will build confidence and self esteem. After several years of going nowhere, I joined the military at age 23. I was scared to death of failing, but graduating basic training turned my life around. We had to do a lot of running, and I found out I was pretty good at it. Several years after that I ran my first marathon. Fear is the thing that holds us back. Fear of failing, fear of rejection, fear of being judged, ect. I know its hard, but your going to have to take some risks. Ask somebody out on a date, and if they say no, ask someone else out. Self esteem and confidence don’t happen overnight; its a building process of small steps. I would seek out some realistic challenges that would build your self confidence. Best of luck!!