If we talk about electric heating then we have simple elements in which we apply electrical energy which gets converted into the kinetic energy of the electrons which heats it up.
But while cooling, we need to take away energy from those electrons doing their dances, since we do not even have to apply energy and rather take it away it should have been easier but we know it is not.
Why is it easier to give free electrons kinetic energy than it is to take it away?
Similarly if we see on the reaction front exothermic reactions are much more easier to sustain and perform than endothermic ones, this also seems to show that endothermic reactions must somehow be difficult than exothermic ones in general.
Why does it seems so?