The psychology of happiness to life itself, such as a party, relief from the stress, and learn to new thing. That is the causes they choose to be happiness themselves.
First of all, the party was a happy thing is to have fun with friends, a lot of people. And have established a relationship together. This often causes psychological pleasure easily.
Second, relax and reward yourself with hobbies like gardening, watching movies, reading books, meet friends, family catering body, relax the mind, etc. When fresh, it has the power to make a fully functioning again.
Third, Should learn to new things. Life as a target reality. And to develop and Resolve problems creatively Potential as possible as this can create happiness.
In Conclusion, all above this is the psychological causes of happiness that can make you more motivated after mind shrinkage. And will make you happier.