Author's Purpose in Childhood Reflection

In the following excerpt from a fictional narrative, the protagonist reflects on their childhood experiences of playing in a nearby forest:

"I remember the sun filtering through the leaves, casting a warm glow on the ground as I raced through the trees, laughter bubbling from my lips. Those moments felt timeless, like they were woven into the fabric of who I was becoming. The forest was not just a place; it was a sanctuary where imagination and freedom swirled together, creating a world where anything was possible. It was in that sacred space that I learned the value of exploration and the beauty of nature's embrace."

What is the author’s primary purpose in this excerpt?