Make it the fixed purpose of your life to make all others happy as far as it is in your power, and so (for that will be necessary) to put self out of view altogether.  This then, ought to be the first thought on awaking:  "Dear Mother, for thy honor I will take care that everybody who speaks to me today shall go away happier".  This thought  is to be the first thought in your examen at night:  "How many have I failed to make happy today."