I used to get like that late at night, and it would keep me up all night. What I started to do was take really deep breaths when it happens and try to calm your nerves down. It also helped for me to tell myself that everything is okay, and do a little checklist through anything that could be making you nervous and if there’s something you can do, do it and if there’s nothing you can do at that point, tell yourself that and reassure yourself that you’re doing everything you can