You stop being shy when you stop identifying yourself as being shy.
You quite literally are what you think you are.
People become leaders through force of personality or though excelling at a particular task. At this stage, it’s not likely you’ll lead anyone because you’ve accepted you’re more comfortable being “told what to do”.
My question to you is, why do you want to be a leader? Is this something you really want or something you think you should want?
Leadership skills are perfected through leading. One usually leads because they’re best qualified to assume that position, and they’re willing to accept the responsibility that leadership entails.
Are you qualified to lead?
Are you ready to assume the responsibility of leadership?
I’m a “leader” among the people in my work group. It’s not a role I pursued because I prefer to work independently. I became “the leader” by default because of the quality of my work.
At times it’s a real pain in the ass.
It’s not impossible to reach your desired goal, but you must be very clear about who you are and what you want. Once you master that, everything else kinda falls in place.
I would respectfully suggest you take a few minutes and peruse the pages of a small text entitled As A Man Thinketh. This should point you in the right direction.