In this type of story the main character has, as the title suggests, a problem he needs to solve or an objective he wants to achieve. He has to struggle to solve the problem or achieve his purpose. He will gain ground, but then lose it. He must keep struggling before forging ahead and in the end accomplishing his goal. While others can help or advise, he must do things on his own.
Any abilities the main character needs to solve his problem must be revealed to the reader before he needs to use them. If he can start a fire by rubbing sticks together, for example, he should be seen doing that, maybe demonstrating it to a younger sibling.
Plan the story carefully. Don't let things just "happen" to the main characters. Readers like to read about a character with whom they can identify who solves a realistic problem that they too might face and have to solve.