It would be well if every breath could be a loving sigh, and every moment be filled with the thought of God. If this can not be, form a habit of recollecting yourself from time to time; the more frequently the better. Let the striking of the hour be a signal for recalling the presence of God. Accustom yourself to the easy and frequent use of ejaculatory prayers. We need but to love in order to pray and to sigh for God. These outpourings of the heart proceed from the Holy Spirit; they are a language of love readily understood by this God of love. We naturally think of what we love; hence we can not say we love God if we rarely or never think of Him.
"Aspire to God," says St. Francis of Sales, "with short but frequent outpourings of the heart."
"As those who are influenced by human and natural love have their minds and hearts constantly fixed on the objects of their affections; as they speak often in their praise, and when absent lose no opportunity of expressing by letters this affection for them and can not even pass a tree without inscribing on the bark the name of their beloved; so those,who are possessed of divine love have their minds and hearts constantly turned toward the divine object of their love; they are ever thinking of Him, they long after Him; they aspire to Him, and frequently, speak of Him; and were it possible, would engrave in the hearts of all mankind the name of their beloved Jesus." [You will find Indulgenced Prayers at Enchiridion of Indulgences 1968. The short prayers approved and encouraged by the Church are certainly commendable.]
"It is an old Custom with the servants of God always to have some little prayers ready and to be darting them up to heaven frequently during the day, lifting their minds to God out of the filth of this world. He who adopts this plan will get great fruit with little pains." ST. PHILIP NERI.
"So, when you don't know how to go on, when it feels as if your fire is dying out and you can't throw fragrant logs on it, throw on the branches and twigs of short vocal prayers, of ejaculations, to keep feeding the blaze. And you will have used the time well." St. Josemaria Escriva, The Way, Sinag-Tala Publishers (1994)p. 21.
Speaking of students, St. Vincent Ferrer wrote: "Interrupt your application [study] by short but fervent and ejaculatory prayers; never begin or end your study but by prayer. Science is a gift of the Father of lights; do not therefore consider it as barely the work of your own mind or industry."