Can anyone tell me how to be self confident?

I (20M) am just curious because I feel like I am lacking in general self-confidence even when I am not in a social situation. I don't know if this general lack of self-confidence is a blackpilled thing but I know I am lacking in self confidence when I am with other people. I don't know if it is because I am lacking in social skills or just that I don't like to talk. I don't know if it is because I am lacking in social skills or just that I don't like to talk. I can be confident in myself in the fact that I am smart and I can do a good job for any job I can do. I can be a good friend, definitely being a supportive friend, not really the friend that is going to get the party started (its not like I don't like to have fun) I just prefer to spend time alone in the fact that I can do what I want to do. I don't know if that definitely being a lack of confidence but I am not going to lie I am a pretty big loner I don't like to spend time with people. I don't know if that definitely being a lack of confidence but I am not going to lie I am a pretty big loner I don't like to spend time with people. I don't know if that is because I am being self conscious about my weight. I am no where near obese, its not like I can't see my ribs but I know I could be a little bit leaner. I don't know if that is because I am being self conscious about my weight. I am no where near obese, its not like I can't see my ribs but I know I could be a little bit leaner. I go to the gym (its $8 a month) so I try to go atleast a couple of times a week. I probably could go more like everyday.<br><br>&#x200B;<br><br>So what I am asking is, what are some things you do to be self confident.