A Question of Dharma

how important is chastity for practice?
how can we go for refuge to the sangha when it is (presumably) full of unenlightened people like me?
how do I balance the need for a teacher and the need to be 'a light unto myself'?
do you have anything to say about overcoming the tendency to control situations and people?
could you say more about working with irrational fear, e.g. panic attacks, phobias, etc.
what would you say is meant by spiritual friendship?
how important is it to avoid killing insects...