Too much of a good thing is a proverbial expression, used for calling attention to the fact that excess of anything will have negative consequences over time.
The phrase originates from the 16th century, with the oldest documented case being attributed to William Shakespeare, appearing in his play “As You Like It”.
In one scene of the play, the question is uttered;
“Why then can one desire too much of a good thing?”
Over the centuries, the quote has been used to draw people’s attention to the importance of moderation and temperance.
“Too much of a good thing” also refers to the 2004 country hit of Alan Jackson.