I like this little thing called the "Hero's Journey". It's the foundation of the 12 step program and also creative writing guide, because it's based in ancient fable traditions.

I kind of use it like this: 

-To "answer a call" find a good "mentor".

-If you're facing "tests" than look for "allies" (also facing the same/similar tests.)

-If you're in the "cave", facing an "ordeal", somewhere, there's a sword (or something (i.e there's something that represents both the way back and the reason you adventured in the first place.))

It's a bit "main character syndrome", but I think that can be okay if the main character you're playing also take the time to play supporting roles. And, it's infinitely versatile. Climbing a mountain. Making a piece of toast. Climbing a piece of toast. All different hero journeys.