If the stamina runs out, sprits become poor. The mood is depressed. Physical fitness should be revive. You should rest gently in a bath and go to bed early when you have a free time. In the meantime you might have calls. But in such case, if you are ready any time to correspond neatly, you are able to rest. There is no good idea and no good deeds, if you are weaken. I think I must to enhance stamina and sprit.