If you are not a happy person that is a choice you are making. You have full control over your life and the decisions that you make. There are many factors which people measure happiness. Some people think money is happiness however they may absolutely miserable with what they do on a daily basis to make their money.
You might look at people who have absolutely everything and you strive to be like them. These things may be wealth, possessions, status, or even the position you hold at work. These things don’t create happiness. Happiness is a choice.