A recent study found that although Americans claim to be happier to than those in other countries, we're generally less able to take minor disappointments and setbacks in stride -- we totally let them get us down.

Making a conscious effort not to let small things (like parking tickets or a messed up lunch order) throw off your whole day or week is a big part of having a happy successful life. Maintaining a positive outlook will help you feel more energetic and will benefit all areas of your life. Keeping a mood journal can be a useful tool for keeping perspective, or just taking a step back and looking at the big picture when you catch yourself getting upset over something small.