Facebook is a really exciting place trying to do something really important that I really believe in. And it matters.

If I had to embrace a definition of success, it would be that success is making the best choices we can ... and accepting them.

We can each define ambition and progress for ourselves. The goal is to work toward a world where expectations are not set by the stereotypes that hold us back, but by our personal passion, talents and interests.

The traditional metaphor for careers is a ladder, but I no longer think that metaphor holds. It just doesn’t make sense in a less hierarchical world... Build your skills, not your resume. Evaluate what you can do, not the title they’re going to give you. Do real work. Take a sales quota, a line role, an ops job. Don’t plan too much, and don’t expect a direct climb. If I had mapped out my career when I was sitting where you are, I would have missed my career.

There is no straight path from your seat today to where you are going. Don't try to draw that line. You will not just get it wrong, you'll miss big opportunities. And I mean big-like the Internet. Careers are not ladders, those days are long gone, but jungle gyms. Don't just move up and down, don't just look up, look backwards, sideways around corners. Your career and your life will have starts and stops and zigs and zags. Don't stress out about the white space-the path you can't draw- because there in lies both the surprises and the opportunities.

Getting from point A to point Z can be daunting unless you remember that you don’t have to get from A to Z. You just have to get from A to B. Breaking big dreams into small steps is the way to move forward.

As a man gets more successful, powerful, he is more liked, and as a woman gets more successful, she is less liked, and that's true by both women and men.