“Happiness depends upon ourselves.”
“Remember, happiness doesn't depend upon who you are or what you have, it depends solely upon what you think.”
“Happiness, as is evident, depends partly upon external circumstances and partly upon oneself.”
“Happiness is not a matter of events, it depends upon the tides of the mind.”
“The greater part of our happiness or misery depends upon our dispositions, and not upon our circumstances.”
“The happiness of your life depends upon the quality of your thoughts.”