You wanted to climb up a mountain. The dream analysis says you have big goals of improving yourself. However, your goals are too ambitious. You are being stretched thin. In fact, this dream warns you that you are short of your goals and you might have to pay the price.
The dream imagery of falling and dying, is only metaphorical. The dream interpretation says to dream of dying, can mean the death of an old habit, or the end of something non-living.