Even in the pursuit of really important objects it is unwise to become so deeply involved emotionally that the thought of possible failure becomes a constant menace to peace of mind.
 Bertrand Russell, The Conquest of Happiness (1930). copy citation

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Author Bertrand Russell
Source The Conquest of Happiness
Topic failure peace
Date 1930
Language English
Reference
Note
Weblink http://russell-j.com/beginner/COH-TEXT.HTM

Context

“The wise man, though he will not sit down under preventable misfortunes, will not waste time and emotion upon such as are unavoidable, and even such as are in themselves avoidable he will submit to if the time and labour required to avoid them would interfere with the pursuit of some more important object. Many people get into fret or a fury over every little thing that goes wrong, and in this way waste a great deal of energy that might be more usefully employed. Even in the pursuit of really important objects it is unwise to become so deeply involved emotionally that the thought of possible failure becomes a constant menace to peace of mind. Christianity taught submission to the will of God, and even for those who cannot accept this phraseology there should be something of the same kind pervading all their activities. Efficiency in a practical task is not proportional to the emotion that we put into it;” source