You wrote: "Last time she informed me that one of her hesitations around reconciliation was that I was so underdeveloped in the personal development arena, and she was so advanced that we would go back to being a mismatch"
Hemingway wrote: There is nothing noble in being superior to your fellow men. True nobility lies in being superior to your former self.
PigPen there may be a mismatch, but it's not because you're underdeveloped.