A new Challenge

A friend of mine is a enthusiast in hiking. Him and his wife goes very often and would encourage me to tag along many times. After trying his training in the easier levels and eventually the more advanced levels, and finally to the levels where it involves some mountain climbing. One day he came to me and said: “You've been trained enough to go to the next stage. Next week, I want to take you to a trail where there's also a mountain to climb. Don't worry, you're training should be sufficient. If you're not ready, I wouldn't give you this challenge.” So, from today onwards, I have to be physically fit to take this challenge. Honestly speaking, I'm very nervous and somewhat frightened by unknowing what is ahead. I just don't know what to expect other than preparing myself mentally as well. Will there be places that I can't walk through? What happens if I encounter a thick fog? Would I be able to trample through marshes? Is the mountain steep? How much gear should I bring with me? Will I physically and mentally ready to take this challenge? What lies ahead is entirely a mystery.