The way to happiness is: keep your heart free from hate, your mind from worry. Live simply, give much. Fill your life with love. Do as you would be done by.
What, if some day or night a demon were to steal after you into your loneliest loneliness and say to you: 'This life as you now live it and have lived it, you will have to live once more and innumerable times more' ... Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: 'You are a god and never have I heard anything more divine.
There are only two days in the year that nothing can be done. One is called Yesterday and the other is called Tomorrow. Today is the right day to Love, Believe, Do and mostly Live.
Material objects give rise to physical happiness, while spiritual development gives rise to mental happiness. Since we experience both physical and mental happiness, we need both material and spiritual development. This is why, for our own good and that of society we need to balance material progress with inner development.
Someone was hurt before you, wronged before you, hungry before you, frightened before you, beaten before you, humiliated before you, raped before you... yet, someone survived... You can do anything you choose to do.
At the door of every happy person there should be a man with a hammer whose knock would serve as a constant reminder of the existence of unfortunate people.
Now if there is any gift of the gods to men, it is reasonable that happiness should be god-given, and most surely god-given of all human things inasmuch as it is the best. But this question would perhaps be more appropriate to another inquiry; happiness seems, however, even if it is not god-sent but comes as a result of virtue and some process of learning and training, to be among the most god-like things; for that which is the prize and end of virtue seems to be the best thing in the world, and something god-like and blessed.
O happiness! our being's end and aim!
Good, pleasure, ease, content! whate'er thy name:
That something still which prompts the eternal sigh,
For which we bear to live, or dare to die.
What you focus on expands, and when you focus on the goodness in your life, you create more of it. Opportunities, relationships, even money flowed my way when I learned to be grateful no matter what happened in my life.