A study funded by the US government has concluded that conservatism can be explained psychologically as a set of neuroses rooted in "fear and aggression, dogmatism and the intolerance of ambiguity".
A classic procrastinator is unsure that he could accomplish the tasks before him. And he is given to excessive planning, as if only the perfect strategy was worth doing. Lack of confidence, sometimes alternating with unrealistic dreams of heroic success, often leads to procrastination; rather than risk failure, procrastinators create conditions that make success impossible."