It’s an understatement that learning to say no is a critical life skill. It’s important both personally and professionally, and once you learn how to do it without being a jerk, you have time to focus on the things you need (and want) to do, instead of other people’s priorities. Here’s a quick way to master it.
Source: LifeHacker – The Most Effective Way to Say No Is to Say You “Don’t,” not You “Can’t”