By himself. Salman Khan is the founder and faculty of the Khan Academy. He started the Khan Academy as a way to tutor his cousins remotely — while he was a hedge fund analyst in Boston, and they were students in New Orleans.

He started posting videos on YouTube, and more and more people kept watching. It was clear there was a huge unmet need, so Sal left his hedge fund job and started Khan Academy with the mission of providing a free world-class education to anyone, anywhere.

Here's his impact:

Sal holds an MBA from Harvard Business School, where he was the president of his class. He also attended MIT, where he received 3 degrees: a Masters in Electrical Engineering & Computer Science, a B.S. in Electrical Engineering & Computer Science, and a B.S. in Mathematics.

The Khan Academy is a not-for-profit with the mission of providing a world-class education to anyone, anywhere. Here's someone you might recognize touting his achievements:

He did this by himself. In a closet office. Using a computer.

Now let's turn that lens inward. How can you change the world? How can you change your life? How can you change your career? Like Salman, it just takes one Idea and Action.

What can you plan today, to then take action tomorrow, and change your situation?