Cab this is the reason I like working on my cars, especially painting, or building engines and transmission, late in the evening in my little shop at my house.

I go out about 10pm and work until 1 or 2 in the morning because there are no distractions from phones ringing, customers showing up, wife needing something etc.

If I get distracted and have to leave something sit I don't have the memory that I used to and it leads to at a minimum time wasted rechecking work already done or at worst something like your example.