According to Buddhism, the root of suffering is neither the feeling of pain nor of sadness nor even of meaninglessness. Rather the real root of suffering is this never-ending and pointless pursuit of ephermal feelings, which causes us to be in a constant state of tension, restlessness and dissatisfaction. Due to this pursuit the mind is never satisfied. Even when experiencing pleasure, it is not content, because it fears this feeling might soon disappear, and craves that this feeling should stay and intensify.

People are liberated from suffering not when they experience this or that fleeting pleasure, but rather when they understand the impermanent nature of all their feelings, and stop craving them. This is the aim of Buddhist meditation practices. In meditation you're supposed to closely observe your mind and body, witness the ceasing arising and passing of all your feelings, and realise how pointless it is to pursue them. When the pursuit stops, the mind becomes very relaxed, clear and satisfied.

True happiness is independent of external conditions and of our inner feelings. Indeed the more significance we give to our feelings, the more we crave them, and the more we suffer. Buddha's recommendation was to stop not only the pursuit of external achievements, but also the pursuit of inner feelings.