actually, though yoga has spiritual origins, the yoga taught in
classes nowadays have nothing spiritual in it and is some physical
exercises done merely for physical fitness and some limited mental
benefits but doesnt really lead to selfrealisation
therefore it is quite useless to attend these classes if ur goal
is self-realisation
speaking from experience, self-realisation is not difficult at
all. it took me less than two years of self-inquiry to reach
self-realisation, while our moderator thusness had it even faster
(also practicing self-inquiry). both of us can attest that
self-inquiry is a direct path to self-realisation.
you also dont really need much guidance for it, though i did
have several conversations with seekers on the practice, see my
e-book:
http://awakeningtoreality.blogspot.com/2010/12/my-e-booke-journal.html
oh btw seekers if they require guidance should seek those who
are already enlightened... otherwise it will be a case of the
blind leading the blind