Enter Action with Boldness

‘The 48 Laws of Power ‘ Robert Greene (law 28)

If you are unsure of a course of action, do not attempt it.  Your doubts and hesitations will infect your execution.  Timidity is dangerous:  Better to enter with boldness.  Any mistakes you commit through audacity are easily corrected with more audacity.  Everyone admires the bold; no one honors the timid.

http://www2.tech.purdue.edu/cg/courses/cgt411/covey/48_laws_of_power.htm