Be able to laugh at difficulties.

The "kingdom of heaven" to which he referred was the state of God-consciousness, not the beautiful astral heavens that most people visualize, where virtuous souls go after death.

Until you've tasted it [anything], you can't really know it.

Even-minded and cheerful. When things go bad, you'll find that the same kind of attitude comes to you naturally.

Intuition is the innate ability in everyone to perceive truth directly - not by reason, logic, or analysis, but by a simple knowing from within. That is the very meaning of the word "intuition": to know, or understand from within - from one's own self, and from the heart of whatever one is trying to understand. Intuition is the inner ability to see behind the outer forms of things to their inner essence.

Take whatever cause for outward happiness you might have and take it within yourself, so that, if the sun should go out, you will not be any less happy; if the birds stop singing you will not be any less happy.

That's what life is for, to find that joy in yourself.