It means that if there is no challenges, you won't be able to reach your best future. if it is difficult in the first, it will be easy. there are many challenges to come to reach your best future. if you want your best future, don't let your guard down continue to move forward to have the best future you wanted. God do not give challenges we can't handle or finish.
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That means if there is no challenge there is no futureĀ 
because 'challenge' is training you if you stop challenging there is no best future
just like we studying when we keep on learning we can graduate or we are in TopĀ 1,2 or 3. so keep challenging

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