Without taking the risk of the new job, you never would have been blessed with the higher standard of living. Without saying yes to your friends to hang out with their other friends, you never would have met your wife. Without taking small amounts of risk, you never would have seen the rewards.
Fear and risk are closely related.
Risk is taking a step into the cloud of fear. Every risk includes a piece of fear, otherwise it wouldn't be a risk.
Risks are required for us to develop, and since risk includes fear, conquering our fears is necessary for growth.
Take a chance and stretch your comfort zone. You will be a better person in the long run.