Start novena Sept 23 ending Oct 1, vigil of the Feast Day of the Holy Guardian Angels.
O Holy Angel, whom God, by the effect of His goodness and His tender regard for my spiritual welfare, has charged with the care of my conduct, and who assists me in all my wants and comforts me in all my afflictions, who supports me when I am discouraged and continually obtains for me new favours, I return thee profound thanks, and I earnestly beseech thee, O most amiable Protector, to continue thy charitable care and defence of me against the malignant attacks of all my enemies. Keep me away from all occasions of sin. Obtain for me the grace of listening attentively to thy holy inspirations and of faithfully putting them into practice. In particular, I implore thee to obtain for me the favour which I ask for by this novena.
[Here mention your intentions]
Protect me in all the temptations and trials of this life, but more especially at the hour of my death, and do not leave me until thou hast conducted me into the Divine Presence of my Creator in the Mansions of everlasting happiness. Amen.
O most faithful companion, appointed by God to be my Guardian, and who never leaves my side, how shall I thank you for your faithfulness and love and for the benefits which you have obtained for me!
You watch over me when I sleep; you comfort me when I am sad; you avert the dangers that threaten me and warn me of those to come; you withdraw me from sin and inspire me to good; you exhort me to penance when I fall and reconcile me to God.
I beg you not to leave me. Comfort me in adversity, restrain me in prosperity, defend me in danger, and assist me in temptations, lest at any time I fall beneath them. Offer up in the sight of the Divine Majesty my prayers and petitions, and all my works of piety, and help me to persevere in grace until I come to everlasting life. Amen.