Revising a book manuscript is a delicate process.
Two thoughts jostle in my head: Be Humble... Stand Up for The Work.
Are these in conflict?
I opened A Profound Weakness, to find Betty Spackman say this about her art... "I didn't need more power, I needed more humility." And this..."The time for licking wounds is over. We need to learn how to assess the value of our own work and not depend on the approval of others." (pp 10-11)
Perhaps the need for both humility and gumption faces every artist... perhaps this is the great creative balancing act.