When you are experiencing intense or painful feelings or a distressing situation, practicing strategies that divert your attention or help you feel more grounded can be helpful. By distracting yourself, or focusing your attention elsewhere, with the intention of going back later to face the problem that is causing the distress, you are giving yourself time and space to become more emotionally regulated. In turn, you will be in a safer, better position to skillfully address the problem.
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Supporting a loved one can be all-consuming. It is critical to leave space for your own needs and to have a personal coping "toolkit", otherwise the eating disorder will also wear you down. Read more about taking care of yourself here.