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.

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.