I believe I read somewhere....
that Blessed Teresa of Calcutta was very fond of the following prayer:

"Dear Jesus, help me to spread Thy fragrance everywhere I go. Flood my soul with Thy Spirit and Life. Penetrate and possess my whole being so utterly that my life may be only a radiance of Thine. Shine through me and be so in me that every soul I come in contact with may feel Thy presence in my soul. Let them look up, and see no longer me, but only Jesus! Stay with me, and then I shall begin to shine as Thou shinest: so to shine as to be a light to others. The light, O Jesus, will be all from Thee. None of it will be mine. No merit to me. It will be Thou who shinest through me upon others. O let me thus praise Thee, in the way which Thou dost love best, by shining on all those around me. Give light to them as well as to me; light them with me, through me. Teach me to show forth Thy praise, Thy truth, Thy will. Make me preach Thee without preaching—not by words, but by my example and by the catching force, the sympathetic influence, of what I do—by my visible resemblance to Thy saints, and the evident fulness of the love which my heart bears to Thee. " - Venerable John Henry Newman, C.O.