Does anyone else feel like their public and private self are two different people? (18F)

Im not sure how to accurately describe what im talking about, but when im at work i think ive accidentally become someone whos known for being really outgoing and i like to make people laugh, but i think in being like this, i say things that i dont really mean. Im just saying them for attention or to be ‘funny’. Then when i come back home and im by myself again i feel really embarrassed and insecure about almost everything ive said during the day. I consider myself to be a very sympathetic, empathetic and kind person, but i dont think people really would describe me as that when they speak to me. I think i find it awkward to tell people how im really feeling or about what i think about something, so i just turn everything into a joke kinda. How do i stop doing this? Should i meditate or something?