This is an important principle for - perhaps - all but a very small number of people: make your book part of a creative portfolio. Me, broadly: 1. Mentor and teacher. 2. Occasional lecturer 3. Editor 4. Write across genre, but also form - and starting more commercial work under a pen name
BookwormVaught - Dr Anna VaughtTry to make this book part of a broader creative portfolio - maybe you organize an online event, write a few short stories, start a writing group, whatever it might be: this is very good for morale, improves perspective & takes the weight off one single book, one like a sword of Damocles above you