It does not matter if you are a Doctor, a Lawyer or an infantry soldier in the Army if you want to be the best and get ahead, you will need to take risks.
A doctor may have to take risks when working with a patient. The Doctor may have to experiment with different forms of medications or new surgical procedures when all else has failed in an attempt to help the patient.
A lawyer may have to argue a case in an unorthodox manner to win the case, but if the lawyer wants to become the top lawyer and make millions of dollars fighting high profile cases lots of risks have to be taken.
A soldier may have to take a risk and run thru gunfire to save another injured soldier, to complete their mission, or just to secure an area from being overrun by enemy troops, after going days with little to no sleep, but if a soldier wants to get promotions and eventually lead men into battle they also need to take risks.
These risks are not unlike someone looking to get rich in a casino, they have to be willing to risk everything they have to get that million dollar payoff. If you play it safe in a casino you may get lucky and win a big jackpot on the slot machines, but if...