Negotiating for a higher salary can obviously result in big, long-term benefits, so why don’t more people do it? More importantly for you, why aren’t you doing it? If it’s a lack of preparedness, then you know what to do. But if you are prepared and have good reasons to ask for more compensation, but you’re still holding off, it’s time to examine why. Here are the three most common excuses for not going for it from the Harvard Business Review, why you make them, and how you can overcome them: