Waiting until something breaks. By the time a problem is serious enough to force action, it's usually already cost more than a small, early fix ever would have.
Thinking improvement requires expensive technology. Most of the improvements that matter most — a cleaner shelf, a faster callback, a clearer checklist — cost nothing but attention and follow-through.
Ignoring employee ideas. The people doing the daily work usually notice the daily frustrations long before the owner does.
Changing too many things at once. A dozen simultaneous changes make it impossible to tell which ones actually helped, and often overwhelm a team that was managing perfectly well with smaller, sequential improvements.
Never measuring results. An improvement that isn't measured can't be confirmed, and a good idea nobody tracks tends to quietly disappear within a few months.
Celebrating big projects while ignoring small wins. A new truck gets applause. A cleaner shelf rarely does — even though, compounded over time, the second kind of change often matters more.
Becoming comfortable. The single biggest threat to a business that's finally running well is the belief that it no longer needs any attention.