Can someone change physical attributes using subconscious mind?

I have a friend that claim she could change her eye color using self affirmations before bed, can this be true?

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Fishy · 36-40, F

I mean... is it a slight change in colour?
If so, it might not be the colour that changes but the perception, lighting, etc

If it's a completely different colour, it might just be psychosis

or she's just lying