Laziness kills

This summer, like the three summers before this one, I was assigned summer homework. Unlike the past summers laziness got the best of me and I didn't complete my summer homework. There is something about summer that always causes me too slack off and do nothing. Why is that? The fact is I have no clue. I feel disappointed in myself for not completing my summer homework and this feeling of disappointment is something I never want to feel again. I promise to work harder now and to complete future assignments because I don't want to let others down and most importantly I don't want to let myself down.