Both unilateral and bilateral contracts are enforceable in court. For example, a unilateral contract is enforceable when someone chooses to begin fulfilling the act demanded by the promisor. A bilateral contract is enforceable from the get-go; both parties are bound the promise.
Yes, scratching is a form of self harm. Try to tackle this problem while you can because it has the potential to get worse. I started out scratching and now I burn myself with a lighter and cut myself. It's a self-destructive way to deal with overwhelming mental/emotional pain.
The makers of the Eat Yourselfâ¢ brand, including the Eat Yourselfâ¢ websites, products and services, do not endorse violence of any kind. Specifically, Eat Yourselfâ¢ does not endorse any form of self harm, including but not limited to chewing, gnawing, biting, mutilating, dismembering, consuming one's own body or otherwise engaging in eating disordered behavior. If you or a loved one is considering eating yourself, or harming yourself in any way, please seek out professional medical attention immediately.