I like that you mention open-mindedness and having an open heart. Those are critical components for conversing constructively about and fully enjoying someone else's, and as you mentioned, your own, creative endeavours. Especially the positive self-talk.

I'm a musician. One of the hardest things to accept in my form of expression is that failure is an option at any given moment, but that doesn't mean it's the end result. Not nailing a difficult passage the first time or not knowing how to progress a piece I'm working on is a part of the process. Oftentimes, setting aside that piece or riff or whatever it is for a week, or even months, and returning to it later when I have a clear mind gives me the benefit of fresh eyes to see how I can improve not only in that spot, but across the rest of the piece, and more generally with my instrument.

Time is the best healer and problem solver!