We all have some fear. Some fear is valid (when you are facing a lion in the jungle) whereas most fear is a creation of the mind and ego.
Fear is what prevents you to dare to live to your potential, bringing unnecessary obstacles on your path.
Being fearless does not mean doing stupid things based on ego. It means pursuing meaningful things in a systematic way with faith and belief in your capacity to achieve it.
When you focus on fewer things totally, you can achieve great success. It is when you get distracted that your energy gets scattered leading to anxiety, stress and fear.
Have clear goals, break your tasks down to many steps that lead you to achieve your goals. Enlist the help of the right team and execute. Clarity and right help will remove fear from your path.