I mean I think if I get really real with myself, I feel like I wronged myself.

I think sometimes that really stings because out of all the people in the world myself is the one who has really been through it all together with me.

Yeah, but...we're allowed to make mistakes.  We all do.  It happens.  And we keep on going, most of the time better than before, even if a little worn and battered.  Sayuri is "perfect", but she is not perfect, because no such thing exists.  She is only an idealization in that her traits carry her to success solely because she exists only in a framework where she can succeed.  Or even when she is in a situation when she "fails", it's still "admirable".

In the real world, she, too, would need to give herself compassion for the things that she could not do.  It wouldn't be her fault.