Always be prayerful. Work with your hands and pray to the Lord with your mind that he always remain in your heart and guide you. This will make you free from fear and anxiety. He is omniscient and all-auspicious. He will do what is good for you. So without holding any doubt in the mind, work for the Lord.
(p.83, Spiritual Treasures, Swami Turiyananda’s letter to swami Nirupamananda on 19 November 1914)
Push on with the organisation. Nothing else is necessary but these — love, sincerity, and patience. What is life but growth, i.e. expansion, i.e. love? Therefore all love is life, it is the only law of life; all selfishness is death, and this is true here or hereafter. It is life to do good, it is death not to do good to others. Ninety percent of human brutes you see are dead, are ghosts — for none lives, my boys, but he who loves. Feel, my children, feel; feel for the poor, the ignorant, the downtrodden; feel till the heart stops and the brain reels and you think you will go mad — then pour the soul out at the feet of the Lord, and then will come power, help, and indomitable energy. Struggle, struggle, was my motto for the last ten years. Struggle, still say I. When it was all dark, I used to say, struggle; when light is breaking in, I still say, struggle. Be not afraid, my children. Look not up in that attitude of fear towards that infinite starry vault as if it would crush you. Wait! In a few hours more, the whole of it will be under your feet. Wait, money does not pay, nor name; fame does not pay, nor learning. It is love that pays; it is character that cleaves its way through adamantine walls of difficulties…Have fire and spread all over. Work, work. Be the servant while leading. Be unselfish, and never listen to one friend in private accusing another. Have infinite patience, and success is yours… Take care! Beware of everything that is untrue; stick to truth and we shall succeed, maybe slowly, but surely. Work on as if I never existed. Work as if on each of you depended the whole work. Fifty centuries are looking on you, the future of India depends on you. Work on.
(p. 367-370, V.4, Complete Works of Swami Vivekananda, Swamiji’s letter to Alasinga on 19th November 1894)