You should fix your own problems, physician, heal thyself.
physician, heal thyself
idiomOne should attend to one's own flaws or defects before presuming to advise others about theirs.
Origin
disputed originCalque of Ancient Greek ἰατρέ, θεράπευσον σεαυτόν (iatré, therápeuson seautón) and Latin medice, cūrā tē ipsum, from Luke 4:23.
He keeps telling me how to manage my stress, but he is always exhausted; I told him, physician, heal thyself.
Before the senator criticizes the moral failings of his colleagues, he would do well to remember the old proverb: physician, heal thyself.