Quoted By:
>tfw i live here
Don't overthink it, and don't waste your money on gimmicky shit.
Layer as needed. Bring extra socks. Bring a basic first aid kit, and know how to use what you've got in there. Acclimate to elevation. Drink water. Pace yourself. Don't do anything stupid, stop and think about what you're doing before you jump into something. Learn some basic orienteering skills, and if you bring a GPS, know how to use it before you head into the woods.