The question is not why are they hard and frustrating, but why are you making it so hard and frustrating. Yes, there will be moments that we will challenge you physically, mentally and intelectually. But the goal is to find ways to overcome your problems and leap over your fear. At the end of the day, everything is only hard as you make it to be. Because life can be as hard and as frustrating if you don't practice overcoming and dominating pain and frustration you will be overwhelmed when frustration and pain hit you in real life. That's why we called it a principle of life.