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Sometimes you can stop the flow of tears by redirecting your attention onto something else. For example, you could change your focus by doing some simple math problems in your head. Add up small numbers or go over the times table in your head will distract your from what is making you feel upset and help you calm down. Alternatively, you could try to think of the lyrics to your favorite song. Remembering the words and singing the song in your head will take your mind off whatever is bothering you. Try to imagine the words to a happy or funny song so you give yourself a mental pick-me-up. While it may seem hard to do in the face of whatever is making you want to cry, thinking of something funny can really help you overcome your tears. Think of something that has made you laugh really hard in the past--a funny memory, a scene from a movie, or a joke you heard once. Try to smile when thinking of this funny thing. Giving yourself a mental pep-talk when you feel like you are on the verge of tears can help you overcome your desire to cry. Tell yourself that it is okay to feel sad, but that you cannot feel sad right now. Remind yourself of the reasons you cannot cry at that moment--you don’t want to cry in front of people you don’t know, or you want to be strong for someone else, etc. Tell yourself that you will let yourself feel sad, but that you need to hold it together for that moment.  Remember that you are a great person, who has friends and family who love you. Think of what you have achieved in your life, as well as what you hope to achieve in the future. But if you do that it will make you cry more!! Research has shown that using positive self-talk has many health benefits beyond easing distress. It can also expand your life, enhance your immunity to the common cold, reduce your chances of developing depression, improve your ability to deal with difficult situations, and reduce your chances of dying from a heart attack. The worst thing you could do would be to dwell upon whatever is making you want to cry, especially when you want to keep yourself from crying. Distracting yourself is a temporary way to keep yourself from crying--but know that at some point you will have to face whatever is bothering you.  Put on a movie that you have been wanting to watch (or an old classic that you really love.) If movies aren’t your thing, grab your favorite book or put on an episode of your favorite TV show. Go for a walk to clear your head. Often, being in nature is a great way to distract yourself--invest yourself fully in appreciating the beauty around you and try to avoid thinking of whatever is making you sad. Exercise. Exercising releases endorphins and will make you feel better when you are feeling sad. Exercising also makes you focus on what you are doing, rather than how you are feeling.
Think of something else that you can focus on. Think of something funny. Remind yourself that you are a strong individual. Distract yourself by engaging in something else.