Most challenges i meet usually are tempting and the vast majority is urgent. This is a bad combination for stepping one step back or “going to the balcony” as [William Ury](https://www.youtube.com/watch?v=GrtccgWxrU8&list=PLi0_F3akUkEERQn4lPmURurqo-KFnjbeK) would say.
In other words: the greatest challenge is not the challenge at hand but the question of whether it is really necessary to take it. Some challenges turn out to be distractions at best or while you’re busy winning this one, you miss out on the fact that tackling the other one would have been more important.
And if you manage to say no to a challenge, you’ll be faced with a new one, sometimes an even trickier one: sticking to you no.
In short one could say that it sometimes is good to challenge a challenge before diving in, head first, trying to solve it.