I have a new conceptualization of how my stories should end. I used to view my story endings as opportunities to wrap up a series of events. In a sense, it was an "external" process: get my character down the tree, that sort of thing. But as my stories got more complicated, I found that this strategy wasn't working for me. My attempts to wrap up multiple story lines resulted in me feeling like I had to end my stories multiple times, and each of those endings diluted the impact of all of the others.
Now I'm seeing my endings as more "internal." They will be focused on the mental state and emotional state of a character, rather than the outcome of events. Moreoever, that ending snapshot of the final mental and emotional state needs to carry the resonance of all of the storylines I was developing with any sort of depth. The ending should touch on how the character has concluded on each of these storylines--not necessarily how she is going to act on them, but how she will internally process them. She could be obsessed with some elements, she could freely discard some elements, but I feel like a reader should feel that emotional response accompanied by some sense of forward projection. If a character is changing in some specific way throughout the story, then the ending should handle how that change finishes and reaches some sort of equilibrium, even if the equilibrium is oscillating somehow.
A long time ago, some writing teacher used a wave as a metaphor for an ending. I don't remember much more than that, but now the wave comes in handy for me again. I imagine a character walking out of the ocean, and all of that character's baggage from the story is the ocean itself. A wave builds behind the character--this is the shape of the journey. Then, in the end, the character can stop moving, but the wave will continue and crash past the character and spread along the sand. The water will be blocked by where the character is standing, but the rest of the water will move forward and spread and interact with the sand and sink into the earth.
What's Peanut eating? Rotisserie chicken.