What is happiness :
Most of us probably don't believe we need a formal definition of happiness; we know it when we feel it, and we often use the term to describe a range of positive emotions, including joy, pride, contentment, and gratitude.
it only came when some one cares about you , loves you understand you. and most important is also remain with you never leave you.
then you will be happy
Loved your comment! Most of the time, this meaning cannot be expressed with words, only with feelings or emotions. People will always remember you for the way you've made them feel, No because what you told them.