It is always worthwhile to do work when assigned. (Especially readings.) It seems to me that it is a microcosm of the eternal perspective.
“Oh this is so boring I am going to have a pie party right now.” That is an attitude that focuses on the temporal moment, not the future. Of course, an actual eternal perspective is different even from this.
Procrastination (putting off till tomorrow) – maybe one of the habits more detrimental to an eternal perspective.