Only undertake what you can do in an excellent fashion. There are no prizes for average performance.
— Brian Tracy

Undertake something that is difficult; it will do you good. Unless you try to do something beyond what you have already mastered, you will never grow.
Ronald E. Osborn undertakes quote

In the end, you're measured not by how much you undertake but by what you finally accomplish.
— Donald Trump

Old age is ready to undertake tasks that youth shirked because they would take too long.
— W. Somerset Maugham

Friendship is an arrangement by which we undertake to exchange small favors for big ones.
— Montesquieu