Challenges can be define as antagonization  or instigation that intended to convince a person to perform an action they otherwise wouldn't not.
According to oxford dictionary; challenges is define as a new or difficult task that test's somebody ability and skills.

Challenges are supposed to be speed boosters not speed breakers. Did men give David a chance ? Even prophet Samuel never believed in him. WizKid who is now a world renounced musician had a very rough path yet he never gave up. Never give up! No matter how many time you tired, or how many tines you failed; always keep trying and always believe. God's plans for you are great. 

From me
Sammie