Usually we find it difficult to control our mind. It seems as if our mind is like a balloon in the wind – blown here and there by external circumstances. If things go well, our mind is happy, but if they go badly, it immediately becomes unhappy. Such fluctuations of mood arise because we are too closely involved in the external situation. We are like a child making a sandcastle who is excited when it is first made, but who becomes upset when it is destroyed by the incoming tide. By training in meditation, we create an inner space and clarity that enables us to control our mind regardless of the external circumstances. Gradually we develop mental equilibrium, a balanced mind that is happy all the time, rather than an unbalanced mind that oscillates between the extremes of excitement and despondency.