I just casually laugh it off, and then… most of the resulting stress is gone.
LMAO - Laughing My Anxiety Off
Sorry I had to lol but in all seriousness having bad anxiety can lead to some pretty gloomy days. I had (and still) suffer from paranoid anxiety sometimes. Some days its bad, other days its manageable, and some days I don't have it at all.
The best solution I had was talking to people who knew my situation that I could trust, even when it was hard to believe them when they said nothing was going to happen and that I was simply being paranoid. I knew that the things I worried about were sometimes so far-fetched and I had no evidence to make me believe things that would trigger it were true, but my mind was always playing tricks on me and I constantly needed reassurance.
Usually I would calm down by just chatting about my worries with close friends or my siblings, but never my parents because they would stress me out more. I would think about the future and when I knew for certain that things would turn out alright to help think positive in the moment because my situation was so bad there was nothing I could do and laughing seemed impossible when faced with a situation so serious.
Talk to people you trust who know you and love you. Tell them whats bothering you and having their thoughts on your mind can help.