On a level of simple personal survival, understanding and forgiveness are crucial... whether in an intimate personal relationship or on a global level.
It's not at all uncommon for a writer to get a ton of publicity for one book and then not get as much for the next one. I don't worry about that because I try to worry about the one single part of the job I can control: the writing of the book. If I do that well, I feel, good tidings generally will
I had a terrible manager once who described my career as 'spiraling downward.'