Meditation. It will allow you to gain control over thoughts, feelings, emotions.
Be grateful. Mentally thank your past and the people in it for the experience and the lessons they gave you, for what they taught you.
Wedge wedge. Don't be afraid of the future. Most often, a person plunges into painful memories for him when he has been alone for a long time. Try to be in the company of friends and acquaintances more. New experiences are the best medicine.
Working with images. Mentally pick up a blue balloon, put all your “pressing” thoughts into it, inflate it with a special gas, tie it up and release it into the sky. Mentally follow his journey until the ball disappears from view.
Find a new hobby. Doing what you love helps to distract from restless thoughts, reduces nervous tension, relieves stress and improves emotional state.