Staying home doesn’t need a valid excuse. “I want to” counts.

Most people invent a reason to skip things because wanting to stay in does not feel like a real reason. So you borrow one: a headache, homework you already finished, a ride that fell through. Every fake excuse teaches you that your own preference does not count on its own, and after enough of them you stop noticing what you actually want.

Turn something down this week with nothing attached to it. Not tonight, thanks, is a complete sentence, and most people move on faster than you expect them to.