Authors:

[S]tudies show that one of the best ways to lift your mood is to engineer an easy success, such as tackling a long-delayed chore.

Gretchen Rubin (2015). “The Happiness Project (Revised Edition): Or, Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun”, p.24, HarperCollins
[S]tudies show that one of the best ways to lift your mood is to engineer an easy success, such as tackling a long-delayed chore.