Everyone wants to be happier. Whether it's money, love, a car or any number of other things that might do it for you. Although, you might be forgetting a simple thing called 'gratitude'. No kidding!

Scientists just did a study where they have people write down why someone in their life was very important to them. Then they surprised the subjects by having them call the person they wrote about and read what they wrote. The results might just bring a tear to your eye...