For me, everything revolves around preplanning and organization----both the music and the gear. Playing the music and dealing with the people (patrons) are no problem. If there’s an issue, it’s me. Yesterday, I forgot my glasses. Survived with a borrowed pair. I drove 160 miles once to find I’d forgotten the powered mixer for the PA. By the hardest, worked out a solution for that. For solo gigs, I go through a checklist like a pilot might do.