1. Young people care what others think of them
2. Middle aged people don't care what others think of them
3. Old people realize that nobody thinks about them
- Twenty One Pilots
There is no practice life. You learn by living.
If you can learn to handstand on someone else's hands without, you can do just about anything.
The point being: you have to just go for it. You WILL fail at some point, in any and every endeavor.
But the reward is that you might just be doing a handstand on another person :)
I can run circles around some of my younger associates in terms of critical thinking, design thinking, and integrative thinking. My job requires this and I do it whenever needed.
When I was 20, I worried what other people were thinking about me.
When I was 40, I didn't care what other people were thinking about me.
When I turned 60, I realized nobody had ever been thinking about me.
I always thought the corollary was: feeling stupid is ignorance leaving the mind.
To grow, we must learn how to fail well. I agree; the goal is to succeed or fail egolessly: efficiently and productively, without regret, even do it eagerly as one explores a new path... then failure becomes merely a lesson in what not to try, before you try again.
However, I will point to Richard Hamming's advice to learn from our successes rather than our failures.
"There are so many ways of being wrong and so few ways of being right that it is much more economical to study successes."
And:
"Study successes. If you study successes, when your time comes, you'll know how to succeed. If you study failures, then you'll know how to fail. So study success very closely: not only yours, but other people's. Why did Galileo do what he did? How did Newton do it? Try as best you can to study other people: how they succeed, and what the elements of their success are, which elements of that can you adapt to your personality. You can't be everybody, but you have to find your own method. Studying success is a very good way of informing your own style."
(The latter quote is from 25:30 of https://youtu.be/a1zDuOPkMSw)
And one's inner dialogue tends to be the nastiest critic and chips away at motivation when learning something new.
It doesn't help that many humans tend to put down others more easily if they perceive them as weak regardless of similar or different identity. Being of the same age, gender, ethnicity, etc. doesn't matter. And people strive really hard to reframe their perspective to view others as weak too.
I've gone through this as a child and it was paralysing. You always play it safe and that results in you not giving 100%.
I wish I had understood that as a child. I tried to learn to dance and act, but I mostly failed because I didn't really put myself out there. I did learn to sing thanks to choirs. I got into computers partly because all my mistakes were completely private.
There's no reason I can't continue to learn new skills. I just need to shed my ego and try things without reservation.