get in(to) (one's) good graces

To come to be in one's favor; to gain or earn one's approval or regard. I must admit, she's gotten into my good graces after everything she's done for our family. He's trying to get in the boss's good graces in the hopes of advancing his career. Hey, your friend Tiffany doesn't seem to like me. How can I get into her good graces?

good graces, to be/get in one's

To insinuate oneself into favor, to ingratiate oneself. “Good graces” has meant the condition or act of being favored since the fifteenth century and appears throughout English literature. The seventeenth-century diarist John Evelyn wrote (Memoirs, 1675), “A sprightly young lady much in the good graces of the family.”