Try to ask for what you want or state your opinion in a confident tone. Being assertive means standing up for your rights with-out violating the rights of any one else . If other people believe that you truly respect and understand them, they will be more likely to meet your deemands. To develop your assertiveness, plan in advance what you want, to say and why you want to say it. Speak in clear, simple language and express empathy for the other person while stating your case. Always take responsibility for your own behavior, including what ever you choose to feel about any given situation.
Know when and how to end conflicts.