Imagine working on one skill in 2017 that–once you improve on it–will raise your value by 50 percent. The one skill is public speaking.The dividends on the investment you make in sharpening your communication skills will pay off for the rest of your career. Don’t take my word for it. Listen to billionaire Warren Buffett’s advice to a class of business students at Columbia University back in 2009:”Right now I would pay $100,000 for ten percent of the future earnings of any of you, so if you’re interested, see me after class.”After the laughter subsided, he turned serious.”Now, you can improve your value by 50 percent just by learning communication skills–public speaking. If that’s the case, see me after class and I’ll pay you $150,000.”Buffett’s point is that mastering the art of public speaking is the single greatest skill to boost your career.You might be saying, That’s great, but I have a fear of public speaking. It’s okay. Buffett was actually terrified, too.