What was Lemon Brown's treasure?

Greg was the boy in the The Treasures of Lemon Brown. He wanted to play Basketball for the Scorpions, but wasn't allowed because of his grades. One night when he was supposed to be studying he went to an old abandoned building down the street and met a homeless man named Lemon Brown. Lemon Brown taught Greg many things about himself, and his past life. Brown taught Greg self confidence. This self confidence eventually led to Greg's grades improving