Do you know what your top five strengths are? Here’s why it’s important and how you can be more productive and achieve greater happiness in your job.

Early in my career, I thought I had to be good at everything. Not true. You can’t be good at everything. In fact, you can only be great at a few things. The sooner you realize this, the more quickly you can focus on your strengths and steer clear of your weaknesses.

Rather than reviewing one book this week, I thought I would share my favorite business books. I get asked this question regularly, most recently when I was lecturing at Vanderbilt University’s Owen Business School earlier this week.

This is probably the most important question you could ever ask. The answer will determine how fast you advance in your career and, more importantly, how happy you are in your job. Many of us have had to figure it out the hard way—by trial and error.