In all pain keep in mind that there is no baseness in it, that it cannot harm the soul which guides you, nor destroy that soul as a reasoning or as a social force. In most pain you may find help in the saying of Epicurus, that pain is neither unbearable nor everlasting, if you bear in mind its narrow limits, and allow no additions from your imagination. Remember also that we are fretted, though we see it not, by many things which are of the same nature as pain, things such as drowsiness, excessive heat, want of appetite. When any of these things annoy you, say to yourself that you are giving in to pain.