JeZeBeLBy the process of psychosomosis, mind over matter, doctors bedside manner, placebo etc etc - allow me to refer to the old song popularised by Stanley Holloway (he played Eliza Doolittle's dad in My Fair Lady)
My Word you do look well, My word you do look well.
Though the symptoms are very physiological, solutions are available in the psychological domain. Fight it with the mind. Tell it (the chronic Epstein-Barr virus probably) to depart. Though it helps to have a little knowledge on the medical mechanisms. With problems I concentrate like mad just as I go to sleep (each time I wake). No miracle cure but it helps.