Generally speaking, the most miserable people I know are those who are obsessed with themselves; the happiest people I know are those who lose themselves in the service of others...By and large, I have come to see that if we complain about life, it is because we are thinking only of ourselves.
Be believing, be happy, don't get discouraged. Things will work out.
If we are worried about the future, then we must look today at the upbringing of children.