Ego is a pesky little intruder. It can turn otherwise encouraging, agreeable individuals into bullies who intimidate and demoralize their target. I speak from personal experience when I say I've seen many coaches, teachers, and directors act from their ego rather than their heart. I've even been the victim of such destructive so called instruction. They say, "opinions are like belly buttons, everybody has one." The key to thriving through your pageant prep and personal development journey is taking the adjustments that work for you, and knowing when to censor the ones that don't. Any time your gut is telling you it's time to move on, you should probably listen. You're instincts are usually right. Learn to listen to that inner voice. It will serve you well, long after your pageant career.
Now, this doesn't mean reject constructive criticism. There is a great deal of value in being able to make adjustments based on thoughtful, personalized instruction. The red flag presents itself when someone gives you criticism with the intent to intimidate. Intimidation leads to a hostile environment that makes you the student throw up your walls and retreat inward to a guarded place. I believe in creating an environment where students can be open and free to express themselves without reservations. So when someone lays on the scare tactics in order to undermine your confidence, it's time to politely move on to a more positive, productive environment.
Surround yourself with people who believe in you. There is no time to be bogged down by people who don't.