Let the mind be cheerful but calm. Never let it run into excesses, because every excess will be followed by a reaction.
Swami VivekanandaThose who grumble at the little thing that has fallen to their lot to do will grumble at everything. Always grumbling, they will lead a miserable life, and everything will be a failure. But those who do their duties as they go, putting their shoulders to the wheel, will see the light, and higher duties will fall to their share.
Swami Vivekananda