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One of the best ways to deal with rejection is to find your tribe. Identify others who share your interests, values, and beliefs and forge relationships with these people. When you do this, you will feel more confident about yourself and your story. Connect with others by joining clubs and organizations in your local community and online. Just because one person in your family rejected you, doesn’t mean everyone will. Get in touch with your other parent (unless they rejected you, also), siblings, aunts, uncles, and grandparents. If these people are willing to support you, let them. As hard as it is to believe, there are others who have gone through similar experiences as yours. Search online or in your local area for support groups that help you connect with these people. You may find a new support system and an outlet for coping by meeting with others who’ve gone through what you have. For instance, if your parent rejected you because of your sexual orientation, you might search for a support group for youths who recently  came out of the closet. There are a range of negative effects from parental rejection, such as anger, insecurity, or depression. In the weeks, months, and years that follow, you may need help coming to terms with the rejection and owning your story. A professional mental health therapist can help you do this.  Ask your family doctor or the members of your support group for suggestions of therapists in your area. If you are a student, you might also talk to your school counselor.
Build community with others like you. Reach out to other family members. Join a support group. See a therapist.