In Genesis 2:9, the tree of life and the tree of the knowledge of good and evil are both “in the midst of the garden.” That’s not a literary happenstance. Proverbs 3 makes a startling connection if you keep Genesis 3:6 in mind (the tree was desirable to make one wise):
Blessed is the one who finds wisdom, and the one who gets understanding, for the gain from her is better than gain from silver and her profit better than gold. She is more precious than jewels, and nothing you desire can compare with her. Long life is in her right hand; in her left hand are riches and honor. Her ways are ways of pleasantness, and all her paths are peace. She is a tree of life to those who lay hold of her; those who hold her fast are called blessed. (Proverbs 3:13-18)
Finding wisdom is a tree of life.
In terms of what the trees are representations of in our own daily experience I am not quite sure why the trees are in the same place (or are the same tree?). But in Proverbs, wisdom is a tree of life. Maybe something like self-consciousness of death is wisdom but also catastrophic from the point of view of personal experience? I don’t know.