Some are consciously, like spending money and walking to work. Others are not like breathing or making your heart beat. The human mind automatically takes over thought and decision making when it comes to the important things regarding life. As for the way you live it. Those are your decisions alone.
Many civilians risk their lives everyday.
Firemen and Police are prime examples not to exclude many others. These people have made a conscious decision to risk their lives for the well being and safety of others. Members serving in the armed forces have made a similar decision and sometimes at a greater cost. They uproot themselves from life, as they have known, leaving friends and family behind. From there a journey of the body, mind and soul enriches them with the knowledge needed to succeed and survive in a sometimes-hostile world.