A young person I know felt so depressed that she thought about ending her life every day. She planned how and where she would crash her car and fantasized about putting on dark clothing and walking onto the highway at night so a driver would hit her. She felt anxious and hopeless, certain that she knew she would never feel happy again. The only thing that kept her from dying by suicide, she told me, was the thought of how devastated her mom, dad, and younger brother and sister would be. She sought help: Under the supervision of a psychiatrist, she tried several different anti-depressants to help alleviate the depression. But while each seemed to work for a little while, after a few short months, the familiar and devastating sense of hopelessness would start to overtake her again. Finally, the psychiatrist she was seeing recommended she try transcranial magnetic stimulation …