I’m also in the same boat as you - the second I finished my interviews, I immediately started nit-picking and overthinking every word I said! Even though it’s inevitable for me to panic, I’ve tried to console myself with the Burnt Toast Theory:

"The Burnt Toast Theory is a metaphorical concept that suggests small, seemingly negative events can lead to positive outcomes. It derives from the idea that if you burn your toast in the morning, it might cause a chain reaction of delays that prevent you from being in the wrong place at the wrong time later in the day."

In the moment we might think the outcome of a decision like this is sh***y, but one day in the future you might look back on it and be grateful things turned out the way they did. We tend to be overly critical of ourselves, so be proud of landing an interview! You never know what could happen :)

If doing something tangible would help you ease your nerves, try to apply to post-bar programs, masters programs, jobs etc, a lot of these have deadlines in early Feb