Once you have made a careful decision based on facts, go into action. Don't stop to reconsider. Don't begin to hesitate, worry, and retrace your steps. Don't lose yourself in self-doubting which begets other doubts. Don't keep looking back over your shoulder.
Inaction breeds doubt and fear. Action breeds confidence and courage.
Almost all the progress ever made in human thought has been made by the Doubting Thomas's, the questioners, the challengers, the show-me crowd.
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