A healthy respect for the hobby of motorcycling, and the fact that it can kill you. Other hobbies can't. This one, much like firearms, does not suffer idiots and mistakes particularly well. You need not be paranoid, but failing to understand and respect exactly what can go wrong, how it can go wrong, and how you build the skills and attitude to prevent that, is the cornerstone of riding. For me anyway...
Tail of the Dragon at Deal's Gap... Avoid it now, do a trackday.
Do not do business with Myrtle West Cycle... Not a reputable vendor by a long shot.