It is not pleasant to be supplanted, but if another man is appointed to do the work you have been doing, and your superiors think he can do it better than you have been doing it, then manfully face the facts and accord him the most sincere and hearty support.

It may be hard, but our training and discipline,--which means our improvement and advancement--come, not from doing the easy and pleasant things, but from striving, cheerfully and pleasantly to do the arduous and disagreeable ones.

The other way open for my friend was to resent the change, accept it with anger, let his vanity be wounded, and begin to worry over it.

What would have been the probable result?
The moment he began to worry his efficiency would have decreased, and he would thus have prepared himself for another "blow" from his employers, another change less to his advantage, and with a possible reduction in salary.

His employers, too, would have pointed to his decreased efficiency--the only thing they consider--as justification for their act.
I would not say that if a man, in such a case as I have described, deems that he has been treated unjustly, should not protest, but, when he has protested, and a decision has been rendered against him let him accept the judgment with serenity, refuse to worry over it, and go to work with loyalty and faithfulness, or else seek new employment.
Even, on the other hand, were he to have been discharged, there could have come no good from yielding to worry.