>>33850861 (OP)
Aristotle would say you need to create a habit of virtuous character traits to become a good man.
Jordan Peterson and Kierkegaard would say you need to adopt responsibility to mature. It gives you meaning.
Carl Jung would say you need to rediscover yourself to become mature i.e. become whole. Only then will have a healthy inner being and the ability to move freely and confidently.
Nietzsche would say there's no such thing as a "real adult". That's just moralizing. Instead you should reject the conformity of the masses and live for you.
What will you do?