One gets to discover ones own limits and is surprised by the extent to which your mind and body can push itself, especially when faced with adversity. As you travel alone when you are fatigued you will find reserves of energy which you never knew, existed within you. Once you experience this I found that it is something that can benefit you in other aspects of life.
Your risk taking/risk analysis, decision making and planning skills are tested everyday. The stakes are high as it is your life at stake. If you don’t make the right decision you have only yourself to blame and no one else.
Excellent article on alpine style solo hiking by the man who inspired me into solo exploration of the high passes.