The first, sickness (vyadhi), is a physical obstacle, but the other eight can be considered mental. These include languor (styana), doubt (samshaya), heedlessness (pramada), sloth (alasya), dissipation (avirati), false vision (bhranti-darshana), nonattainment of yogic states (alabdha-bhumikatva), and instability in these states (anavasthitatva).
Richard RosenPsychobabble is... a set of repetitive verbal formalities that kills off the very spontaneity, candor, and understanding it pretends to promote. It's an idiom that reduces psychological insight to a collection of standardized observations, that provides a frozen lexicon to deal with an infinite variety of problems.
Richard RosenIf we ever do end up acting just like rats or Pavlov's dogs, it will be largely because behaviorism has conditioned us to do so.
Richard RosenSome students are in a hurry to begin "real" pranayama. They go right to the later stages without first laying a quality foundation, and their practice often suffers. First find out what is. This is also part of the answer to the question Who am I?
Richard Rosen