Happiness means different things to differ people.
Some people believes that money will bring them happiness.They work hard so that they can get more payment.Then they could buy whatever they like to have fun.
While some people considered health as the source of happiness.Chasing after money all the time only leads to disease,both physically and mentally.And no doubt that money couldn't buy a healthy body.So having a good health is happiness to them.
Other people think that achievements in work and study is happiness.They enjoy the process of solving problems.Each step of progress in their work will bring them joy.
In my opinion ,having friends and family members around is happiness to me .It is good to have good time with them.Having some accompanied will make me feel safe.Also ,I will share my sorrow or joy with them .And I can help them with their issues as well.