The reason your most "profitable" client is actually bankrupting you is simple:
You priced the work based on creation time, not management chaos.
Add a 30% buffer for emotional and operational support before you send your next proposal. Charge for the actual human you have to deal with.
https://jawestenberg.substack.com/p/price-your-work-for-the-shit-youll
@Daojoan
The converse of this is I always want to be the Good customer
Knowing what a pain it is to deal with difficult ones
But then damned if I don’t have all kinds of wacky ideas and requests as well
Making me the shitty customer I dislike
There should be classes, and exchanges of good customer behaviour