About Istikhara Prayer,its definition,its benefit,its manner and the need of muslim to it.If you want to practise Istikharah in permissable matter,perform two Rak`ah of optional prayer other than Fard prayers and after saying Assalamu `Alaikum to conclude the prayer offer the supplication (Du`a) of Istikhara .Then wait,if your mind is relieved then go on this matter and if you are annoyed quit it,and if you feel nothing wait and Allah will ordain what is good for you.