Get on the right/wrong side of somebody
Definition 1 of 1
Pro Tip 1/3Relationship Impact
Indicates your social standing with someone based on their opinion of you. 
If you study hard, you'll certainly get on the right side of your teacher.
Pro Tip 2/3Emotional Nuance
Expresses a shift in someone's feelings towards you, from neutral to positive or negative. 
Be careful not to get on the wrong side of grandma by arriving late.
Pro Tip 3/3Cultural Sensitivity
Can reflect cultural norms of respect and politeness, important in social and professional settings. 
She got on the right side of the locals by learning a few phrases in their language.