Bié zǒng zuò lǎohǎorén, gāi jùjué de shíhou yào jùjué.
Don't always be a people-pleaser — say no when you should.
Tips
usage
Despite containing 好 (good), 老好人 is usually mildly negative. It implies someone who avoids conflict at all costs, lacks principles, and cannot stand firm. Similar to English "pushover" or "yes-man."