This quote from a letter that the great physicist wrote to his son captures a core idea
“I am very pleased that you find joy with the piano. This and carpentry are in my opinion for your age the best pursuits.”
An amateur musician himself, Einstein understood the value of developing an informal avocation.
“Mainly play the things on the piano which please you,” he tells his son, “even if the teacher does not assign those.” Doing what you love, the way you like to do it, he goes on, “is the way to learn the most, that when you are doing something with such enjoyment that you don’t notice that the time passes.”
Here is the thing. In any given moment, we can either do this or not. the choice is ours.