I've not been able to cry for a very long time, and I really need to. Is there a method to induce crying and letting it all out ?

Try to think of something that makes you sad. Think of someone you care about getting hurt. Watch a sad movie. Listen to a sad song. Put yourself into an emotional state.

well, you could listen to emotional songs {focus on the lyrics :p }or you could watch any tear jerking movies with a box of tissues by the side......most extreme case ,just use the onions

It is okay to feel you want to cry but even if you are not been able to cry it is okay every person has a different threshold and so it varies from person to person. As to letting things out you may like to talk with some one or a professional listener like here so that you are relieved of your feelings even without crying.

When i just want to cry but i can't I listen sad songs, it bring all of the pain and i can't hold it anymore

Honestly, sometimes it depends on the situation and how much it hurts you. I have had moments where I am at home on the phone talking with someone about something between us and I can cry a lot, but the second I see them, I can't shed a single tear. It's weird but I guess my body calms down when I know what's happening in front of me rather than something that's being though about. You know? But eventually when something hits you emotionally, you'll start to cry it's how the body and mind copes with those kinds of things.

You can talk to yourself everything you have suffered. Be honest with your thoughts and your feelings. You can also watch some anime which is sad but have a positive meaning. I suggest Colourful, a great anime :) Hope you can have the best solution

Scream in a pillow or go in a empty field and let it all out. Or You can vent to one of 7 cups listeners :)

I have had that issue too, and I have a number of movies in my video library that I call "emotional laxatives." Certain scenes in them often provoke the tears. If not, all I have to do is look hard at my life, and that oughta do the trick. You might want to look inside and see what stops you from crying. That is frequently a big clue to why you can't cry.

Sometimes writing about our experiences is able to let us feel those emotions, talking to a trusted someone can also help, just examine yourself and find out if you can what is keeping you from crying, are you afraid to be vulnerable?

Move from your mind into your heart. Find someplace quiet where you will not be disturbed and review all the good and traumatic events you've been through in your life. Imagine the person you were at the time of the occurrence, the age you were, how you looked and recall how it made you feel. Remember with compassion.