Sharing the secrets behind the parlor tricks can help with this feeling. Some particular technique may feel easy for you, but there could be people out there who haven't discovered it yet, and are stuck on some task.
Once I'd figured it out however, it seemed trivial. I must be the world's biggest moron for being stuck on it so long. Real engineers would have it sorted in a few minutes. That's why there was no posting explaining it. I was just in over my head and it was my amateurishness showing. It should have been obvious.
If I write it up, it will just show my ignorance... so goes the pathology.