For example, an easy challenge at the beginning of the novel is a quick way to give characters instant cool factor. You simply set up a challenge that looks hard, but is actually something the character can do with ease. Stopping an assassin, say, or slaying a demon, it’s rough stuff for us normal people, but all in a day’s work for our heroes. However, this sort of thing can’t be used exclusively. A novel where the challenge level never gets above 2 (challenging) has no teeth. If the characters are never truly pushed, they’ll never grow, and you’re left with dull, static people. Plus, no one likes a main villain who goes out like a punk.
On the other hand, though, you almost never want to use an overwhelming challenge, and certainly never multiple ones. When you give your people a hurdle they can’t possibly jump on their own, you’re taking the power of the story out of your character’s hands, turning them into passengers on their own plot. While taking power away from a normally powerful character can create great tension, powerless characters are boring over the long term, and no one likes to see their favorite heroine get the shaft at the very end.
Via Gary Hayes