Medical tests have shown that giving stimulates a part of the brain that gives us the same gratification as when we eat food or have sex.

Too often we're happy to receive thanks from the nonprofits we fund, accepting gratitude instead of feedback or performance measurements.

Giving is a universal opportunity. Regardless of your age, profession, religion, income bracket, and background, you have the capacity to create change.

Instead of waiting until the holiday season - when mail solicitations flood in from worthy organizations - and making a flurry of gifts because this is the time of year to give, sit down and take stock. Identify your passion, learn about it, and direct your time, mind, and dollars to aligned causes and organizations.

Actively deciding to give to causes that move you deeply is far more fulfilling than the momentary gratification derived from signing a check and mailing it to a nonprofit about which you know little more than what's on the brochure they sent you.

You can express your generosity in ways that are virtually limitless. This was what I wanted to convey in 'Giving 2.0' - that whether you have $10 or $10 million to give, if you identify the right opportunities and make the most of your resources, your impact can be tremendous.

Philanthropy is often seen as society's risk capital. That means the onus is on philanthropists, nonprofit leaders and social entrepreneurs to innovate. But philanthropic innovation is not just about creating something new. It also means applying new thinking to old problems, processes and systems.