Because challenges is an oppurtunity to test ourselves, our skills or abilities, to expose or showcase our talents, to strenghten the personality within us, to know our limitations, how far our courage will last, etc. It depends on us, on how we turn those challenges into oppurtunies. Coz Every Challenges that we encounters is just like a new life to begin with, there will always be changes and you need courage, hope, determination, faith, etc. to walk towards it and it's your choice or decision if your gonna step on that oppurtunity and accept and ready yourself to embrace the changes or your just gonna turn your back and walk away. Everyday you face challenges and is a challenge itself. Life is a puzzle, it's a challenge, every answer shows oppurtunity for us to live and continue with our lives.