Happiness is a state of mind, so the real source of happiness must lie within the mind, not in external conditions. If our mind is pure and peaceful we shall be happy, regardless of our external circumstances, but if it is impure and unpeaceful we can never truly be happy, no matter how hard we try to change our external conditions. We could change our home or our partner countless times, but until we change our restless, discontented mind we shall never find true happiness.

If we have to walk across rough and thorny ground, one way of protecting our feet is to cover the whole ground with leather, but this is not very practical. We can achieve the same result in a much simpler way – by covering our feet. Similarly, if we wish to protect ourself from suffering we can either try to change the whole world to make it conform to our wishes, or we can change our mind.