Fully agree. The change of perspective can move a lot.
The method explained i.e., focusing on and rewarding the progress — ok, one is always satisfying our brain — applies to many situations in our life: getting tasks done, motivation for learning, changing habits, and so on.
But for the selection which task to progress, the good old Churchill urgent-important matrix is still helpful.
During the day, I am scheduling both: times where I am focusing on progress and times where I am focusing on the completed task. The first is for getting things done, and the latter is for the focus on thinking about new aspects and new ways of solving. And both angles are essential.
…I also take some time during the day for daydreaming for stimulating my brain with entirely new directions…