The other day, I was reading in Proverbs 15, and I came across verse 15, which said, "All the days of the afflicted are evil, but the cheerful of heart has a continual feast." At first, I thought, "Well, duh." and then I realized what it meant.
There are two kinds of people. Those who are happy, and those who aren't. Everyone has bad days. There is no perfect life, only those who choose to be content with the one they have. If you spend your whole life dwelling on your problems, then you're not going to be a very happy person. But if you choose to accept the fact that your life could be worse, and you are thankful for what you have, then life will be a whole lot easier. I know some people who have everything they could ever need, or want. They have a pretty decent life, but they choose to dwell on those things that keep their life from being perfect, and are very unhappy people. Then there are others, who don't have the best lives, but you'd never know it because they are always happy.
So, let's look at this verse again, "All the days of the afflicted are evil, but the cheerful of heart has a continual feast." It's a very true verse. If you choose to be happy, and content, then you will have a continual feast. But if you let the bad things get to you, you won't live the best life.