You should always be grateful because everything is free when you're a kid, but when you grow up everything, and I mean EVERYTHING will change. You need to get a job so you can get money. You should just be grateful for the life you had as a child, but the thing about being a teen, to and adult is everything will get harder.
studies show being grateful can approve positive energy and depression , also its good to be thankful for the deeds someone or somethings has did that you didnt .
