There are temporary or permanent health conditions in which we are under a real and concrete risk of having a heart attack. Installing a wearable external defibrillator can provide supervision and a ‘bridge’ for the transition period, such as a life belt and security, until it is decided by the attending physician whether to implant a permanent internal defibrillator. The challenge: How do you manage to get patients not to remove the wearable defibrillator: “Exercising self-discipline while wearing the external defibrillator saves lives”