Eka-Nishtha or devotion to one ideal is absolutely necessary for the beginner in the practice of religious devotion.
Swami VivekanandaHow long do you remember that it is the Lord who is making you work? But then, by repeatedly analysing like that, you will come to a state when the ego will vanish and in its place the Lord will come in. Then you will be able to say with justice "Thou, Lord, art guarding all my actions from within." But, my friend, if the ego occupies all the space within your heart, where forsooth will there be room enough for the Lord to come in? The Lord is verily absent!
Swami Vivekananda