Steadfastness — It is a great word. It works. And it is a common characteristic of those who do well.
In another word, they are consistent!
They understand that there are certain things that they do everyday. And when done everyday, there will likely be a high return.
We often underestimate what we can do in a day, over exaggerate what we can do over many days.
Steadfastness does not over estimate what we can do in a day.
Steadfastness keeps us disciplined to do those things, which if we do, will have great compounding value to us.