A very interesting question! First of all, it is necessary to find out the root cause of your sadness. If you find the cause, then it is very simple to get rid of sadness. You can get happy, if you eliminate the causes of your sadness. Following steps can help you get happy:
1. Friends are the most important part of our life. They influence of our life in certain walks of life to a great extent. If you are sad and feel depressed, try to contact your friends. They can help you get rid of sadness. They can divert your attention to something else that will help you get rid of sadness.
2. Secondly, catharsis is the most important thing to lighten your sadness.If you are sad and do not know how to get happy, then you should give catharsis to your feeling and emotions. Tragic movies are the best in this regard. When you watch a tragic hero falls from high position or gets jilted in love, you also loose control and shed tears at the gloomy position of various characters in the movie. This act of shedding tears is the cause of happiness as it decreases the boredom.
3. Thirdly, religious panacea can get you real and prompt happiness. Religion has a soothing effect on our mind. The more you are close to your religion, the more you will be happy and content. Thus, try to focus on your religion.
4. Fourthly, try to change your routines. change in routine can also get you happiness.
Apart from the above mentioned tips, you can also try swimming, bathing in a hot tub, listening to music and having gossip with your friends, relatives, colleagues and wife can also decrease your sadness.