The process of personal development.
To make the best of yourself, you have to go through a process where nothing is given in advance.
In essence, every time you solve a problem, you are developing as a human being. You get more experienced, nuanced, and smarter each time.
However, in order for it to be personal development, you have to deal with your individual way of solving all those problems. That's where the rubber meets the road.
Personal development is many things, and it comes in many shapes and colors.
You can take whatever approach to it that makes the most sense to you. At the end of the day, it doesn't matter that much.
The important thing is that you move forward in life.