All living beings, starting from an insignificant worm right up to the highly evolved man, have a natural fear of death and a strong desire to live. According to the Yoga system of Patañjali, though this is understandable, it is not desirable! It is not desirable because it is born out of avidyā or ignorance of the true nature of the soul which is really immortal. This very ignorance is a great stumbling block on the path to perfection. Hence abhiniveśa which is technically termed as a kleśa, an affliction or a vicious tendency, preventing the rise of true knowledge, must be cast off by the seeker of perfection. Spiritual practices like kriyāyoga will help the seeker in this task.