Ideas + Decision - ACTION = Mere Wishes ( No progress made)
Ideas + Decision + ACTION = Progressive Result (Whether the result is successful or not, experience has been gained for a better next time)
For any idea to become a reality, an action must be applied because all objects (including ideas) remains at a state of rest until a force (action) is applied.
Hence, if you must achieve success and steady progress in all your endeavour, then you must always be ready for action no matter how fearful the task may be.