Assertiveness and self-assurance in your decision-making skills can both be developed by learning to say no. The Advantages of Turning Down Requests. To sumonline satta.com up, developing the ability to say no is essential for confidently managing your time, lowering your stress level, & organizing your schedule. You can prioritize your responsibilities, keep a positive work-life balance, and accomplish your goals without sacrificing your wellbeing if you can master this skill.