Haiku is a particularly Zen form of poetry; for Zen detests egoism in the form of calculated effects or self-glorification of any sort. The author of haiku should be absent, and only the haiku present.
The challenge, whenever you create anything, is to persevere and push away the negative voices. And the more you accomplish, the louder they get. The key is to shut them off and trust in your heart where you're going.