Take a deep breath when you are angry. No matter what your parents say, you are an adult and you have your own judgment. If you say something unpleasant, you have to go it alone abroad. Listen to your parents, don't worry, what's not important goes in one ear and out the other. Their educational methods are wrong, which may be related to their age and education level. As long as you are good enough, they will say you are not good, and then belittle you, and others will feel the same way.