Ingratitude - Genesis 40:23

Have you offered someone your best and gone unthanked, pearls of wisdom, that were accepted and yet they forgot about you. Did they forget about your contribution to their victory. Does this make you feel unseen, unnoticed, even bitter?
Ingratitude (Genesis 40:23)
And it came to pass the third day,which was Pharoahs birthday, that he made a feast unto all of his servants: and he lifted up the head of the chief Butler and of the chief baker among his servants. And he restored the chief Yet did not the chief butler remember, Joseph, but forgat him.