" you’re afraid of conflict, there are small, simple things you can do to overcome that fear. First, recognize that harmony isn’t always possible. People have conflicting opinions, needs, and desires. Friction is inevitable. Second, remind yourself that conflict isn’t necessarily bad. It’s merely the expression of contradictory views. How a person reacts to a conflict (with a calm demeanor or with anger) is an entirely different matter. Third, practice saying no in small steps. Start with situations where confrontations are likely to be nonexistent. An example is telling a salesperson at a clothing store that you don’t want to buy an article of clothing. Gradually introduce situations where saying no is likely to have a larger reaction. An example is telling a used car salesman that you don’t want to purchase a vehicle. "

― Damon Zahariades , The Art Of Saying NO: How To Stand Your Ground, Reclaim Your Time And Energy, And Refuse To Be Taken For Granted (Without Feeling Guilty!)