Every day I get to 'Think' and work on everything from digitizing electric grids so they can accommodate renewable energy and enable mass adoption of electric cars, helping major cities reduce congestion and pollution, to developing new micro-finance programs that help tiny businesses get started in markets such as Brazil, India, Africa.

If you're clear on what you believe, you have a great foundation to go make a market.

For CEOs today, it's all about acheieving growth and efficiency through innovation. It's not about product innovation so much anymore as about innovating business models. process, culture and management.

IBM's long-standing mantra is 'Think.' What has always made IBM a fascinating and compelling place for me, is the passion of the company, and its people, to apply technology and scientific thinking to major societal issues.

Don't let others define you. Define yourself.

Your value will be not what you know; it will be what you share.

Growth and comfort do not coexist.