A premature and excessive physical austerity, tapasyā, may endanger the process of the sadhana by establishing a disturbance and abnormality of the forces in the different parts of the system. A great energy may pour into the mental and vital parts, but the nerves and the body may be overstrained and lose the strength to support the play of these higher energies.
<ref>http://incarnateword.in/sabcl/24/transformation-of-the-physical-v#p34</ref>
==Astrology==
Many astrological predictions come true, quite a mass of them, if one takes all together. But it does not follow that the stars rule our destiny; the stars merely record a destiny that has been already formed, they are a hieroglyph, not a Force, - or if their action constitutes a force, it is a transmitting energy, not an originating Power. Someone is there who has determined or something is there which is Fate, let us say; the stars are only indications. The astrologers themselves say that there are two forces, ''daiva'' and ''puruṣakāra'', fate and individual energy, and the individual energy can modify and even frustrate fate. Moreover, the stars often indicate several fate possibilities; for example, that one may die in mid-age, but that if that determination can be overcome, one can live to a predictable old age. Finally, cases are seen in which the predictions of the horoscope fulfil themselves with great accuracy up to a certain age, then apply no more. This often happens when the subject turns away from the ordinary to the spiritual life. If the turn is very radical, the cessation of predictability may be immediate; otherwise certain results may still last on for a time ; but there is no longer the sure inevitability. <ref>http://incarnateword.in/cwsa/28/fate-free-will-and-prediction#p25</ref>
==Auto-suggestions==