Theme of the short story Lifeguard

The theme of the short story the lifeguard is don't take things for granted and appreciate others no matter what. The reason I feel one of the themes is don't take things for granted is because the main character Chris feel sorry for himself because his dad walked out on his mom bother and himself. But as the story goes on he realizes that he's lucky to even have a family. Chris comes to this conclusion when the little boy Mike loses his parents in a car crash that also disables him. Later after Chris has been visiting Mike at the hospital he realizes the other theme, appreciate other. Chris discovers that the little kid he hated for being a nuisance was actually not that bad. In the end he even admired Mike for his courage to fall into fall into his own little world when he tipped into the deep end of that pool.