"If you don't think every day is a good day, just try missing one."
Be appreciative of every day. Even if you haven't had the best day, at least remember how wonderful it is to be alive. If you aren't thinking every day is a good day, imagine missing one! If you miss a day, you won't be able to live any more days. If you miss a day, you are dead. Then the days aren't looking so bad, are they? Just remember; even when you feel like you are having a bad day, remember how bad it would be if you weren't able to live it. Appreciation and thankfulness are key things in life.