Mental Illness is so hard to understand...

As aspects of mental illness present themselves, each must be dealt with in a new way...  Frustration rises in those around the person suffering when logic refuses to prevail...  How do you convince someone that their thoughts are not the truth when they have decided that your words must only be an attack on their sensibility?  How do you help someone feel better when there is a downside to every point of view no matter how promising any point of view might have been yesterday or even an hour ago?  How do you control your own emotions and worry when it is viewed instead as governing and control, when every word you say or action you take is looked upon with suspicion?  It is all so very exhausting...