FREEDOM OF EXPRESSION, RELEASING EMOTION:
Many times we keep our emotions to ourselves. This may cause an explosion later on. We have all known people who do this, and we do it ourselves. Disease of the body follows. We can get cancer from stress and repressed emotions!
Be free with your emotions. Get angry, get sad. Over-control of emotions may even burst into violence.
The very controlled personality is simmering inside. Encourage him or her to express what they are feeling. If they are willing to do this, you may not like what they say. Emotions have a mind of their own, and sometimes they are irrational. Freud built much of his philosophy around the point that the subconscious mind is irrational, and we must work to discover what lies beneath our conscious mind.
The thing to remember is that emotions are real and are begging to be acknowledged. Somebody may offer you a lollipop, and suppose you hate lollipops because they look funny with the stem sticking out of your mouth. You don't have to stifle your emotions to be polite and then suck on the lollipop to indulge your friend. Just say, "Thank you, but I don't go for lollipops."
After a while you will get into the habit of self-expression. You will feel free and much happier. Try not to scream, and say what you mean. Disagreements are part of being human. Everyone is different. We are entitled to our point of view. We are entitled to be (relatively) happy.
If you have extreme anxiety or are bottled up inside, be it over small problems or big problems, see a psychiatrist who can prescribe anti-anxiety medication. You can also look for a course in assertiveness training or a good therapist.
Anxiety can burst into flame at any moment. Light a match, blow it out, and be done with it.
"Freedom now appeared, to disappear no more forever . . . I saw nothing without seeing it, I heard nothing without hearing it, and felt nothing without feeling it. It looked from every star, it smiled in every calm, breathed in every wind, and moved in every storm." Frederick Douglass, Narrative of the Life of Frederick Douglass