I’ve found that, by delaying working on something I’m extremely excited to work on, the energy behind it gathers, like a pot pressurizing the steam within. Delaying the start of such a task by a few days gives me a store of energy that I can unleash when I actually do get started.
Mood as Extrapolation Engine: Using Emotions to Generate Momentum
Tiago Forte

“I learned never to empty the well of my writing, but always to stop when there was still something there in the deep part of the well, and let it refill at night from the springs that fed it.” —Ernest Hemingway