Have you ever thought about what self consciousness or self awareness really is?
Self consciousness is really being aware of what others might think, so basically you are highly aware of others and deeply focused on other people's thoughts rather than your own.
Being self aware or others aware is not necessarily a bad thing if controlled and not obsessive.
If you find yourself being extremely aware of what people might think of you in certain situations, force your mind to go to a place where you are very comfortable and not self aware at all. That place might be when you are in your room, bathroom, parents, siblings or even at the gym.
Remember this always, Whenever you are self-conscious you are simply showing that you are not conscious of the self at all. You don’t know who you are. If you had known, then there would have been no problem— then you are not seeking opinions. Then you are not worried what others say about you— it is irrelevant! - Osho