A、It trains your mind to sustain single-pointed concentration. B、It helps to quiet our mood. C、It helps you forget those worries

Do you ever feel like you’re in over your head and at any moment you’re going to burst? You’re not alone. As humans, we overanalyze and dramatize. It’s not easy to stop our negative thoughts from flooding through, especially during hard times, but it’s also not impossible. (16) Here are three ways you can stop your personal insanity.     
    (18) Meditation. The practice of meditation has been around for centuries, and for good reason. When you feel like you have 50 different thoughts running through your head every 60 seconds: Meditate. Sit comfortably, close your eyes and repeat a simple mantra. Keep it short and sweet, especially when you’re feeling stressed. For example, you can repeat "relax" or "breathe", or even just start counting. (17) You’re literally training your mind to sustain single-pointed concentration, which helps you prioritize your thoughts...and life.
    (18) Move Your Body. Whether you like vigorous exercise or something more low-key, your body craves movement. Exercise with strong breath control and a little bit of sweat helps you release tension while embracing positivity and self-worth.
    (18) Be Honest With Yourself. This sounds obvious and simple, doesn’t it? It’s one of the hardest things to do. We’re always influenced by the people and media around us; it’s easy to lose yourself in the chaos. At the end of the day, always come back to what you want to do and don’t be scared to run away from the crowd.
16. How many ways are mentioned to stop personal insanity in the passage?
17. What advantage does meditation have according to the passage?
18. Which is NOT one of the ways mentioned to stop personal insanity in the passage?