The seas of Twitter are overrun with motivational content. Much of it is effective, some of it isn't, and a few things immediately latch a hold in your brain and stay with you for the rest of the day.
I found one of those over the weekend.
Created by @sylviaduckworth, the Iceberg Illusion makes a clear point that applies to people in all walks of life and at all stages of their respective walks.
Print this out and show it to your players, then make a copy and pin it to your own bathroom mirror.