Observe people wherever you will and you will notice that those who cannot make up their minds are neither popular nor successful. How charmed are you by the personality of a friend who cannot decide whether he, or she, would like to participate with you in some form of activity? Such a person puts you at a real disadvantage. You have invited his participation and are yourself sincere about wanting to do whatever it is you have in mind. By his indecision he prohibits you from securing another partner in the venture, and leaves you in the uncomfortable position of not knowing whether or not you will be able to go ahead with your plans.
Promptness of decision is a very important factor in the attainment of a pleasing personality, and it is a very prominent trait in all successful persons. It is a habit which can be acquired through self-discipline. Promptness of decision develops as a result of a confident, constructive, sure and progressive positive mental attitude. It is closely related, as you will readily perceive, to definiteness of purpose, the starting point of all achievement.
We live in a country where individual achievement is possible on a grand scale because of the great abundance of opportunities in every calling. But opportunity waits for no man. The man with the vision to recognize opportunity and the promptness of decision necessary to embrace it will get ahead.
Source: PMA Science of Success course