Make a good selection and don’t pack in the day of departure. There is nothing worse to start your journey when you’re anxious. Believe me I experienced it… instead of enjoying the fact that you’re starting your lifetime adventure you’re falling apart.
Second thing that you should remember is the fact that you can’t plan everything! I know, I know you might be the master planner but all you preparation might fall to pieces in few seconds due to creepy weather or because your reliable (till that moment) equipment decided to break down in the least expected moment in the middle of nowhere… Don’t turn white with rage, don’t get mad. Just let the adventure carry you. Maybe thanks to that incident you will meet on your way great people or you will get lost and find the most scenic nook in the world. If you survive this crisis… later you’ll remember this moment with smile on your face because those will be this magic moments that you’ve been dreaming about still sitting in home.