Hard Time with Self-Confidence

Living as a human being poses many challenges because we are self-conscious creatures. Confidence and self-confidence become an important part of everyone's lives as individuals but also as a society. However, many successful people who project confidence rather well surprisingly lack of self-confidence. I don't see myself as a self asserted person, I dunno If I am a shy person or If I lack confidence but either way I get that feeling when the spot light is on me, in other words, Like when I read out loud, sing, or explain something I just feel like I want the ground to swallow me up and I don’t want anyone to look at me. And sometimes It get from worse to worst, this lack of confidence I've got turned to a phobia, Stuff like being exposed to direct contact with people and locking eyes with them really irritates me, and this phobia thingy occurs to me while the preceded actions are taken –singing out loud , reading or just standing in front of a group of people- and you really don't want to see what happens to me If someone forced me to stand in front of a bunch of people, I'll either cry while talking , singing whatever, my heart beats gets really fast, It gets harder for me to take my breath and eventually I faint or I'll laugh helplessly and uncontrollably, and believe me I'm not making up anything It's a real thing I was born with but I'm working on It. I haven't had any situations which made me gain my confidence yet and I'm not willing to have one in the near future but I am really working on gaining more self-confidence and I already took some steps in that very high steepy mountain and this by: accepting that everyone makes mistakes, even if someone mocked my work or whatever I was doing I shouldn't care because somehow they make mistakes too, I even started to talk out loud in front of my family and discuss everyone's opinion If we're talking about something that has different point of views, I started singing in front of my