During cardiopulmonary resuscitation (cpr, it is important to place the compression hands over the sternal body but not over the xiphoid process so that

During cardiopulmonary resuscitation (CPR), it is important to place the compression hands over the sternal body but not over the xiphoid process so that there is little risk of physically damaging the heart.
By avoiding the xiphoid process, you will avoid hurting the heart of the person you are doing the CPR to. So make sure that your hands are only on the sternal body, and not the xiphoid process. 

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.