Seriously, what's the most important lesson learned either growing up or maturing?

Is it simply learning to share? Is that the lighter side of learning about the other, learning that “I’m not the only one”?

Is it learning math and arithmetic and other mindful games? or music? learning about the power of the mind?

Is it learning that mom and dad were right?

Is it learning to walk through fears?

Seriously, can life lessons be boiled down into one or a few topics?