Talking to a psychologist helped me. We talked a lot. Then I took more walks, slept more and started to live on a schedule. And gradually things began to go back to normal. Sports are also a great help. Especially if you combine all these methods, the result will not keep you waiting.
Give your body a rest, let yourself relax in your spare time. Sometimes it is useful to do nothing, watch a movie or listen to pleasant music, take a bath. Adjust your diet. Keeping fit is a great way to combat stress. But to someone this is not enough, then I recommend to consider the option of sedative drugs, for example https://medicalbrandnames.com/antianxie ... zepam.html.