Not taking on new customers. The great customers I have are ones who I'm still finishing builds for. Customers may be the bread and butter, but they aren't always right, or just. If I post my progress on a build online I get customers asking "what about my build?" or "why aren't you working on my build?" There's only so much I can do at a time, but a lot of customers either don't care about that or don't understand it. Selfishness is what it boils down to, and why I'd like to get away from a customer-centric business model and build guitars I want to build, to the stringent standards I strive towards. The expectation that a customer owns me because they've given me some of their money is not something I want, yet it pops up again and again.