Growth is Key.
The key that beats doubt and human unbelievers are growth.
If you can grow and become better than where humans left you, then you can become their envy.
The only serious crime is to not grow. You have to grow and become a better version of yourself.
If you have the goal of ensuring that all that concerns you grow and if you can stay committed to that, then you can become a master in such a field needed by all.
Become a master at building interesting growth systems.
Just choose growth!