Constructive criticism can be very helpful feedback, so it's best to listen without preconceptions. Accept and allow, which doesn't mean necessarily to like or agree.
Never react emotionally to criticism. Analyze yourself to determine whether it is justified. If it is, correct yourself. Otherwise, go on about your business.
I always did something I was a little not ready to do. I think that’s how you grow. When there’s that moment of ‘Wow, I’m not really sure I can do this,’ and you push through those moments, that’s when you have a breakthrough.
Negative people will pull you into the gutter if they can. That's not to say keep your head in the clouds, we do indeed need to listen and be realistic, but don't allow yourself to be reduced to the level of envy and hatred expressed by some critics.
If criticism is mistaken or mean-spirited, rise above it. Maintain the high ground when you're under fire. No victory is worth winning at the expense of picking up the mud that has been slung at you and throwing it back.
Your memory is a monster, you forget - it doesn't. It simply files things away. It keeps things for you, or hides things from you - and summons them to your recall with a will of its own. You think you have a memory, but it has you!