One of the few things I know about writing is this:
Spend it all, shoot it, play it, loose it, all, right away, every time. do not hold what seems to be good for later, place it in the book, or for another book, give it, give it all, give it now. The impulse to save something good for a better pace later is the signal to spend it now. Something more will arise for latter; something better.
These things fill from behind, from beneath, like well water. Similarly, the impulse to keep yourself what you have learned is not only shameful, it is destructive. Anything you do not give freely and abundantly, becomes lost in you. You open your safe and find ashes.