Impulse

People often say slow and steady wins the race. But I believe sometimes an impulse is necessary. Lets do a simple exercise. Take a single walnut, and not two since it becomes easier with two and does not serve the purpose of the exercise, and try breaking it with bare hands. Its hard and difficult to break .

Now fix the walnut in between two hands, and instead of pressing it, apply an impulse. An impulse is an act of applying force suddenly. We will see the walnut gets cracked open. 

Similarly some tasks do offer resistance and if you can overcome the threshold, your task will be done in blink of an eye. But you need to be careful and take calculated risk, as with the case of walnut the broken pieces and hurt you.