In fact, 95 percent of people find it tough to stand up for themselves. So, here's how to make your point without making enemies. These tips come from Jana Kamp, author of No! How One Simple Word Can Transform Your Life.

First, if your mom's always asking, "So, when are you getting married?" Try saying, "I appreciate your concern, but really - I'm happy with my life." A little reassurance will help her see you're okay and she doesn't need to nag.

Then, what can you say when your boss wants to add another project to your overloaded schedule? Say "Thanks for your vote of confidence. But I won't be able to do the project justice unless I delegate some of the things I'm already doing." If you make it clear that you're trying to do the best job possible, but you can't do everything, your boss will be more likely to let you delegate and juggle your priorities.

Finally, if you're not interested in a second date, here's how to respond to the "So, when can I see you again?" question. Say something like: "I had a lot of fun, and you're a great person, but I really don't see this going anywhere. I'm sure you'll meet someone who's a better fit."

Bottom line: Rejection hurts, but it's a lot more painful when somebody strings you along. If you'd like to go further, the book is: No! How One Simple Word Can Transform Your Life by Jana Kamp