New sincerity is a style of sharing your true thoughts, feelings and experiences without putting on a show or trying to act cool or different. It's about being honest and sincere in how you interact with the world and other people. It's about living life as authentically as possible, without worrying about what anyone thinks or saying things just to impress. It's also about being open and vulnerable, allowing yourself to feel whatever emotions come in, without hiding them or pretending everything is okay. In a way, it's about being yourself, no matter what.