hiiii can u give me ur diagnosis???? why r u on risperdal it is antipsychotic do u have any psychotic symptoms??? if u have only sleep disorder without any psychoogical problem than zolpidame is useful if u have depression or any other psychological problem than psychotherapy can useful following will helpful for sleep u have to follow sleep hygiene that are following fix sleep schedule and stick on it avoid daytime nap avoid alcohol avoid tea coffe soft drinks 3 hour before sleep regular exercise that makes u fatigue meditation to reduce stress light food in dinner light music while u sleep use bed only when u feel sleepy cool and calm bed room avoid any worries and dont think much in bed if they are than write it down think ab it tomorrow thnk u