Do you bite your nails, smoke or chew pens? If you have a habit that drives you - or your friends and family - crazy, then clinical hypnotherapist Kitty Sak (right) may just have the solution. Sak has spent five years treating people with anxiety or obsessive compulsive disorders by reprogramming their minds. After the Post ran an article on Sak last month, readers wrote in in droves seeking help for their repetitive behaviour, from repeated handwashing to smoking and food cravings. So tonight, Sak is offering a free talk on the basics of how to change your subconscious mind and free your body from robotic habits through hypnotherapy. The talk begins at 7.15pm at the New Age Shop, G/F, 7 Old Bailey Street, Central. For reservations, call 2882 9868 or e-mail [email protected]