Buddhism takes a familiar American principle -- the pursuit of happiness -- and inserts two important qualifiers. The happiness it aims at is true: ultimate, unchanging, and undeceitful. Its pursuit of that happiness is serious, not in a grim sense, but dedicated, disciplined, and willing to make intelligent sacrifices.What sort of sacrifices are intelligent? The Buddhist answer to this question resonates with another American principle: an intelligent sacrifice is any in which you gain a greater happiness by letting go of a lesser one, in the same way you'd give up a bag of candy if offered a pound of gold in exchange. In other words, an intelligent sacrifice is like a profitable trade. This analogy is an ancient one in the Buddhist tradition. "I'll make a trade," one of the Buddha's disciples once said, "aging for the Ageless, burning for the Unbound: the highest peace, the unexcelled safety from bondage."
There's something in all of us that would rather not give things up. We'd prefer to keep the candy and get the gold. But maturity teaches us that we can't have everything, that to indulge in one pleasure often involves denying ourselves another, perhaps better, one. Thus we need to establish clear priorities for investing our limited time and energies where they'll give the most lasting returns.
That means giving top priority to the mind. Material things and social relationships are unstable and easily affected by forces beyond our control, so the happiness they offer is fleeting and undependable. But the well-being of a well-trained mind can survive even aging, illness, and death. To train the mind, though, requires time and energy. This is one reason why the pursuit of true happiness demands that we sacrifice some of our external pleasures.