Happiness is in your control

"Every day, no matter where they are or what they're doing, they find things to laugh about, to celebrate, and to praise. You know, it's an interesting fact of life that what you see is mostly what you look for. Our brains are designed to help us notice that which we have decided is important, and ignore or even blind ourselves to that which is irrelevant. So if you make up your mind to be happy no matter what happens to you, you'll be amazed by all the things you never noticed before that bring you a smile or a laugh or a moment of joy. Most happy people weren't born that way. At some point, they made a conscious or unconscious choice to enjoy their lives, right here and right now. What do you suppose would happen if you made the same choice, starting today?" [Source]