Happiness or contentment isn't something that depends on our surroundings. It's something we make inside ourselves.
If God is most glorified in me when I am most satisfied in him, then he is as committed to my happiness in him as he is to his glory in me.
When one door of happiness closes, another opens; but often we look so long at the closed door that we do not see the one which God has opened for us.
Happiness is not found in the mere possession of money, it lies in the joy of achievement, in the thrill of creative effort.