"Finding out the feelings of people I realised how much I'd done, the hundreds of people that I've taught and the great happiness that it's brought, so I'm thrilled to bits that it's having its revival, " she added.

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And for those suffering from depression, I know how dark and endless that tunnel can feel, but if happiness seems impossible to find, please hold on to the possibility of hope, faint though it may be.

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"I wrestled with how to reconcile my Christian faith with my desire for Will to have the same opportunities to pursue happiness and fulfillment as his brother and sister, " he wrote in the op-ed.

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Because Crystal has thought a lot about how to create the life that reflects your values related to money, I was curious to ask her specifically about happiness.

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