Identifying the Theme of Mia's story

In the story, a young girl named Mia discovers an ancient tree in her grandmother's backyard. As she spends time near the tree, she begins to notice its unique features, such as its twisting branches and vibrant leaves. Mia imagines that the tree holds secrets of nature and wisdom that have been passed down through generations. With each visit, she learns to appreciate the beauty of her surroundings and realizes that sometimes the most profound lessons come from the simplest things in life.

Given this context, what is the main theme of the story?