C is for creativity - something that is important for everyone. And everyone is creative. It does not just mean painting or writing music or sculpting. How we arrange flowers, or decorate our house or design a shed or host a party - these are just some of the ways to express one's creativity.
Elizabeth Gilbert writes about the creativity and the importance of living a creative life:
An excellent book of hers to read is Big Magic - how to get past fear and live a creative life.