The problem for most of us is that the cup has holes, so love goes out just as easily as it goes in. What happens when people are living in the unconditional state of love, however, is that they recognize they are the ocean of love; they know it's their essence. And they naturally overflow in this love. So instead of being love beggars, they become love philanthropists.

In an experiment by Dr. Robert Emmons at the University of California–Davis, people who kept a ‘gratitude journal,’ a weekly record of things they felt grateful for, enjoyed better physical health, were more optimistic, exercised more regularly, and described themselves as happier than a control group who didn’t keep journals.

I seem to have come out of the womb with existential angst and wasn't a happy kid, so I've been on a lifelong search trying to discover how to live the best life possible. I committed my life to doing what I could to experience greater happiness, which ultimately led me to write a book on the subject called Happy for No Reason.

HeartMath found that five minutes of feeling love and care can strengthen your immune system for up to six hours, whereas five minutes of feeling angry can weaken and suppress the immune system for six hours. Love releases very powerful, beneficial chemicals into the body.

The concept (of happiness) is universal. In Buddhism, it is called causeless joy, in Christianity, the kingdom of heaven within, and in Judaism it is called ashrei, an inner sense of holiness and health. Is Islam it is called falah, happiness and well-being, and in Hinduism it is called ananda, or pure bliss.

Like your weight set-point, which keeps the scale hovering around the same number, your happiness set-point will remain the same unless you make a concerted effort to change it.

The third doorway is the Doorway of Unconditional Self-love, which corresponds to the energy center located in the solar plexus area. As I said earlier, the key to feeling love and living in love is having self-love. I mean real unconditional self-love, not "I love myself because I'm a good wife" or "I love myself because I do a good job at work" or "I love myself because I look a particular way." It's because I love myself no matter what. That's where our real power lies, in the ability to love ourselves unconditionally.