According to Daniel Gilbert, studies in psychology show that when given a choice between taking action and doing nothing (assuming that either option has some probability of negative consequences), most people choose doing nothing. This is because it is not easy to rationalize excessive courage, while it is quite easy to justify excessive caution.
However, it turns out that in retrospect, we are more likely to regret inaction than action. Gilbert gives this example: Suppose you own a certain stock (stock A). You have a choice to either sell it and buy stock B (action) or hold on to stock A (inaction). If you choose inaction and lose money, you would regret it more than if you had chosen action and lost the same amount of money. I suppose, this is because the actions that we take become “our own”, in fact, we identify quite closely with what we do. And people tend to like (or at least are good at rationalizing) their own behaviours, possessions, choices, etc.
What are the implications of this psychological trait for photographers? I suppose, one possible conclusion could be that if you have been debating whether to buy a new expensive piece of gear, you should go ahead and pull the trigger – probably, you won’t regret it.
On a more serious note, perhaps there are implications for making creative decisions. There is a saying that rules are meant to be broken, and I think that consciously mixing up techniques, workflows, image styles, etc., instead of doing “what works” in every single photoshoot, is an example of action that requires courage. In fact, we are likely to regret not stretching outside of our comfort zones and breaking some conventions.