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 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.

The best way to keep relationships happy, healthy, and supportive can be summed up in one word: appreciation. What you appreciate, appreciates. When we demonstrate our appreciation for the support we receive from others, it reinforces that behavior and deepens our connection to them.

Practice experiencing your feelings directly and completely by observing them as they move through your mind and body and then letting them go.

I interviewed 100 happy people - I call them my Happy 100 - and I learned amazing ideas and techniques from them that I began integrating into my life. I put them into practice - and they worked! I went from a D+ in happiness to an A-.

I wanted to know if we could live in that state of love, not just every so often, but as an ongoing reality. The answer is YES. There are people who are doing just that, and I wanted to share with the world how they're consistently living in a state of love.

Love is your job description - no matter what you do for a living. If you ever feel unsure of what you're supposed to do in a situation, here's a good rule of thumb: always do what leads to greater love.