You have an irrational fear of criticism
It seems that you aren't comfortable at all with passing judgement on others. Quite the opposite: you avoid criticising at all costs because when you yourself are reprimanded over something, you feel it as deeply as if it were an assault on your psyche. Even when you're not the one on the receiving end of the rebuke, it makes you feel uneasy. Your emotional sensitivity means that you are very compassionate but it can also mean that you hold back from expressing yourself fully. You sometimes get so emotional that you hardly dare expose how you feel by putting it into words. If these things apply to you, it would be useful to find out where the problems come from. Perhaps the answer lies in your past. If you felt you were cruelly blamed for things as a child it could be that you have developed a fear of being punished as an adult, too. If anyone ever tries to criticise you for something the feelings you had as a child are awakened and you relive the same pain. You need to console your inner child and try to separate yourself from it. The peace you find as a result will allow you to remain calm if someone chooses to make an attack on you verbally. What's more, in embracing adulthood, you'll give yourself licence to express your opinions freely.