How to be happy?

Happiness is them most precious thing in life.Without it,a man will feel that his ill fate has taken charge of him and the world is utterly dark and dreadful.On that account,his body grows weaker,his work slackens,and above all,he thinks he would rather die than live.”how to be happy,then?” you may ask.
Now,this is the very puzzle that we are going to solve.First,do things in accordance with your conscience;That is,do to others,as you would have other do to you.Secondly,pay more attention to your health,which is the root of success,for a sound constitution enables you to succeed.Thirdly,worry and sorrow are of no use at all!In case you meet with some hard situation,you must try to overcome it without any hesitation.Willpower is essential to happiness.
And the last,but not the least,adopt an optimistic attitude toward life,for the world is still in making and you can have a share in it .In this way,true happiness can be obtained.