Sometimes after a little honest effort we find that it is ourselves who have been the trying members, and that the other one has been the member tried.
Often it is from two members of the family that the trying element comes.

Two sisters may clash, and they will generally clash because they are unlike.

Suppose one sister moves and lives in big swings, and the other in minute details.

Of course when these extreme tendencies are accented in each the selfish temptation is for the larger mind to lapse into carelessness of details, and for the smaller mind to shrink into pettiness, and as this process continues the sisters get more and more intolerant of each other, and farther and farther apart.

But if the sister who moves in the big swings will learn from the other to be careful in details, and if the smaller mind will allow itself to be enlarged by learning from the habitually broader view of the other, each will grow in proportion, and two women who began life as enemies in temperament can end it as happy friends.
There are similar cases of brothers who clash, but they are not so evident, for when men do not agree they leave one another alone.