This man's very failure to achieve increases his unrest and unhappiness.
Walter Dill Scott, the psychologist, in his excellent book, "Increasing
Human Efficiency in Business," gives loyalty and concentration as two of
the important factors in human efficiency. But loyalty pre-supposes the
giving of a man's best. Concentration demands interest and enthusiasm.
These are products of a love of the work to be done.

The man employed at work for which he is unfit, therefore, finds it not a
means of self-expression, but a slow form of self-destruction. All this
wretchedness of spirit reacts directly upon the efficiency of the worker.
"A successful day is likely to be a restful one," says Professor
Scott,--"an unsuccessful day an exhausting one. The man who is greatly
interested in his work and who finds delight in overcoming the
difficulties of his calling is not likely to become so tired as the man
for whom the work is a burden.

"Victory in intercollegiate athletic events depends on will power and
physical endurance. This is particularly apparent in football. Frequently
it is not the team with the greater muscular development or speed of foot
that wins the victory, but the one with the more grit and perseverance. At
the conclusion of a game players are often unable to walk from the field
and need to be carried. Occasionally the winning team has actually worked
the harder and received the more serious injuries. Regardless of this
fact, it is usually true that the victorious team leaves the field less
jaded than the conquered team. Furthermore, the winners will report next
day refreshed and ready for further training, while the losers may require
several days to overcome the shock and exhaustion of their defeat.

"Recently I had a very hard contest at tennis. Some hours after the game I