I cut from my hair bcz i was angry after argument with my parents but now i don't want to tell bcz i don't want to make them sad (they don't deserve )?

You need help: Communication is often hard and many times we don't have the skillset to do it when we need to most. You may want to seek out an unrelated counsellor/ therapist to learn some ways to understand and deal with life. It is said that family is 80% of the stress in your life, but sadly many of us don't deal with it well. Seek help. It can make your life much easier.