The comfort zone works but it gets boring. So does successful repetition. At some point, all utility gets maximized.
Facing new challenges is the only way to spark learning. Going from ignorance to expert is hard and requires a lot of patience.
Sometimes achieving mediocrity or merely trying something new strengthens what you already do well by making you more dimensional.
You are what you don’t already know.
The willingness to embrace uncertainty and stay open-minded guarantees progression. Without struggle, evolution goes stagnant.