People only cry because they are lonely.
Crying means the involuntary release of tears from your eyes, not wailing or other vocalizations.
If you don't feel enough affection, you will feel loneliness. When you feel loneliness, you will feel the urge to cry. You may cry at that time or suppress it.
Crying is often suppressed.
We usually suppress crying when we are in public - particularly at work or school. We suppress crying because we don't want others to think we are emotionally fragile or immature.
It's difficult to detect the urge to cry or its suppression. However, you can detect how you suppress crying when you release it. Your breathing is labored and your chin trembles. Your breathing is labored because your diaphragm tenses to suppress crying. Your chin trembles because your facial muscles also tense to suppress crying.
Suppressed crying is released later by any strong emotion.
Suppressed crying is released when you feel any strong emotion - positive, negative or suppressive. The distraction of the strong emotion prevents you from continuing the suppression.
Suppressed crying is often released by positive emotions like pride, affection or pleasing taste. Oscar winners cry because they feel strong pride. Loved ones meeting each other at the airport cry because they feel strong affection. People cry while eating because they feel strong pleasing taste. Crying while feeling a positive emotion is called happy crying.
Suppressed crying is often released by negative emotions like humiliation or heartbreak. People who are embarrassed cry because they feel strong humiliation. Women whose men have cheated cry because they feel strong heartbreak. Crying is mistakenly believed to be a symptom of all negative emotions.
Suppressed crying is often released by suppressive emotions like fear. People who have just witnessed a tragedy will cry because they felt fear. Crying is not released until after fear stops. In addition to suppressing all positive and negative emotions, suppressive emotions suppress all involuntary facial expressions except horror. When suppression by fear stops, so does the suppression of crying.
You can tell if crying is normal crying or the release of suppressed crying. If breathing is normal and chin muscles do not tremble, it's normal crying. If breathing is labored and chin muscles tremble, it's the release of suppressed crying.
Crying makes people feel compassion.
Crying and blushing are the only expressions that you cannot express voluntarily. They are also the only expressions that cause others to feel compassion. People who see you cry or blush will want to help you.
When your crying makes others pay attention to you, their attention makes you feel affection - which stops your loneliness and your crying.
Crying appears to be contagious.
The sight of somebody crying often makes people cry because it makes them feel compassion. The compassion then releases their suppressed crying.
Crying is not evidence of a problem.
Crying just means that you are lonely - which many of us are. Crying is the equivalent of feeling your stomach growl because you are hungry. If you feel your stomach growl, you should eat. If you cry, you should feel affection - go interact with family or friends.
Crying is not evidence of a problem, like depression. It should not lead you to consider professional help. Doctors and therapists will reinforce your mistaken belief that you have a problem - it's in their interest. Instead, just interact with familiar people.
Crying is good way to monitor loneliness.
Loneliness is the only emotion that causes crying directly. If you are crying, you are lonely. Even if you are happy crying, you are lonely.
If you do cry once a week or more, you are lonely. If you keep increasing how much affection you get each week, you will eventually stop your crying and your loneliness.
If you want to cry, be alone.
If you want to cry for an acting role, for example, you should stop feeling affection at least a few days before filming - avoid seeing or talking to all family and friends. During those days, be sure to suppress all urges to cry. Just before filming call your mother or look at her picture - that should provide enough affection to release suppressed crying. Instead of a positive emotion like affection, you could also try a negative emotion like compassion by watching a video about pet cruelty.
For more about emotions, visit: Happiness Dissected