We might remind ourselves that criticism is as inevitable as breathing, and that we should be none the worse for articulating what passes in our minds when we read a book and feel an emotion about it, for criticizing our own minds in their work of criticism.
Everything is worth it. The hard work, the times when you're tired, the times where you're a bit sad... In the end, it's all worth it because it really makes me happy. There's nothing better than loving what you do.