In Buddhism, Sanskrit tṛṣṇā (generally translated with thirst or craving) is also close to the notion of avidity this being an eagerness or desire for something such as wealth or worldly enjoyments. In the case of Buddhism, it is tṛṣṇā for becoming and non-becoming (P., bhavābhavā) that always leads to rebirth which has to be overcome.
Our tṛṣṇā for the joys obtained through the psychophysical body get us bound down to becoming and non-becoming. Ironically, it is the memory of previous, personal hardship and pain that makes us think twice before we embark on some new enterprise. In other words, our psychophysical body has decisive limitations of which we must be aware, if we hope to survive. In the final analysis, it is not a pleasure vehicle. Our continual tṛṣṇā/avidity for its life remains for us a huge problem.
At the end of its cycle, the psychophysical body brings us nothing but sorrow—still we would want to do it all over again. But the greatest of fools are those who bet on the belief that the death of the psychophysical body brings with it final non-existence; that there will be no more rebirth. This is tṛṣṇā for annihilation or abhava. But because consciousness or vijñāna does not die, life continues and with it ignorance and karma. In other words, we find our self bearing another psychophysical body after we die.
Vijñāna, which is the transmigrant in Buddhism, is not fundamental, but something akin to the dividing of the most fundamental into two parts. For the one who is perfectly awakened (become Buddha) the illusion of the primacy of vijñāna is gone, replaced by the One Mind. The world (loka) is revealed to be an illusory configuration of the original Mind. What was once real is now seen to be unreal while true reality is eternal and undying. Rebirth is always based on tṛṣṇā for the unreal which is all, sadly, the unawakened see.