If it's any help, then think about this for a moment: Ty Cobb, a legendary MLB center fielder that played from 1905 to 1928, widely thought of as one of the top 3 best baseball players in all of history, had a batting average of .366. What does that mean? That means that he would hit a ball 36.6% of the time. To this day, nobody has a higher batting average than him.
That's impressive, right? But, you see, this means that he misses 63.4% of the time. When he gets up on the field with a bat in his hands, facing down a pitcher, it's more likely for him to mess up than hit the ball. Way more likely to fail, than to even succeed. And he's considered one of the best of the best.
The objective truth is that failing is inevitable, and is a process to winning. You're your only spectator too, and so is everyone else their own only spectator. Only you see how many times you swing and miss, how many times you flop and fail terribly. People are born with talent, yes, but talent is like a strong bar of steel- it has to be honed, sharpened, its edge must be ground for it to cut well. You need to fail to succeed.
Still, this won't stop either you nor I from being afraid of rejection, failure, so on. Maybe it'll ease the worry, but only by failing and eventually succeeding and acquiring true confidence will you conquer your fears. Life's a game you just might fail, and that's why winning is worthwhile. Who would play a game where you can't ever lose? There's got to be stakes for there to be any real merit to it. Keep in mind though that I'm not even 1% of the way through to that "goal", if that's even my goal, and I'm mostly talking out of my mind. Best of luck.