Writing scenes for The End can be more uplifting than writing scenes in The Middle.
Think of the Middle as the tunnel of darkness, fraught with antagonists of all sorts. The Crisis, the high-point of the Middle, is the dark night of the soul, hitting bottom, when the protagonist becomes conscious of who she really is, or what she has been avoiding or denying. A light snaps on, and thus begins the process of transformation.
In the End, the protagonist still has foes to confront and overcome. Only now, she is armed with a new understanding of herself. For the first time, her goal comes into focus.
The Climax at the End (1/4) serves as the light at the end of the tunnel. The protagonist moves toward the light -- one step forward toward the ultimate transformation, three steps back, a fight for a couple of steps, being beat backwards.
The Climax spotlights the character in full transformation demonstrating the necessary new skill or personality, gift or action.
The Climax is the crowning glory of the entire project. The Climax is where protagonist "shows" in scene her acting in a transformed way -- in a way she could not have acted in any other part of the story because she first needed to experience everything she does in the book to get to the final stage.
Ask yourself what scene will most dramatically show her demonstrating her transformed self?
The Resolution ties everything up. If the story resonates with thematic significance the reader is left to ponder the deeper meaning.