I need to clarify that the short prayers are not stand alones. They are "to be used as a complement to some other work by which the faithful raise their minds to God in humble trust, while carrying out their duties and bearing the hardships of life. Hence, a pious invocation completes the elevation of the mind to God..." I love this further elucidation: "...both the raising up of the mind and the pious invocation are like a precious stone which is inserted into ordinary activities to adorn them, or are like salt which properly seasons these same." Further: "The invocation to be preferred is the one which is more in harmony with the particular situation and the personal dispositions of the individual: whether it comes spontaneously to mind or is chosen from those proven effective in their long standing use by the Christian faithful. An invocation can be very short, expressed either in just one or a few words, or even merely conceived in the mind." There are further examples: God! Father! Jesus! Praised be Jesus Christ! I believe in you, O Lord! I adore you! I hope in you! I love you! All for you! Thanks be to you! Thanks be to God! Blessed be God! Let us bless the Lord! Your kingdom come! Your will be done! As the Lord wills! Help me, O God! Comfort me! Hear me! Hear my prayer! Save me! Have mercy on me! Spare me, O Lord! Hail Mary! Glory to God in the highest! You are great, O Lord! I am totally yours!