There was the following sentence in the article under the caption “Find your happiness “in iVillage. com.: http://www.ivillage.com/what-learn-annoyingly-happy-people/4-b-479266#ixzz2PiSjFoXw
“If there are two words that are keys to contentment, they are ‘limits’ and ‘boundaries,’” says Reiss. “Prioritizing the must-do items on our lists is essential, after which the should-do list must be narrowed down with polite but firm no-can-do responses.”
It seems the “must-do” things should be prioritized to “should-do” things in making decisions. Is “Must” an order you must obey, and “should” is a mere recommendation that you can always or easily neglect?
What is the basic difference of “must-do” from “should-do” in terms of the level of obligation, moral and motivational aspects?