When we don't get any treats, we feel depleted, resentful, and angry, and we feel justified in self-indulgence. We start to crave comfort - and grab that comfort wherever we can, even if it means breaking good habits.

You really have to begin by figuring out what kind of person you are. The tip is to really take a look at yourself.

Look for happiness under your own roof.

One of the best ways to make yourself happy in the present is to recall happy times from the past. Photos are a great memory-prompt, and because we tend to take photos of happy occasions, they weight our memories to the good.

What you do every day matters more than what you do once in a while.

No leader did more for his country than Winston Churchill. Brave, magnanimous, traditional, he was like a king-general from Britain's heroic past. His gigantic qualities set him apart from ordinary humanity; there seemed no danger he feared, no effort too great for his limitless energies.

Happiness is hard because it's very subjective. I know the people that seem happiest to me, but whether they are actually - what they're really like inside is really hard to say.