This prayer teaches us the one true Reality on which we must stay concentrated.
January 24, 1914
O THOU who art the sole reality of our being, O sublime Master of love, Redeemer of life, let me have no longer any other consciousness than of Thee at every instant and in each being. When I do not live solely with Thy life, I agonise, I sink slowly towards extinction; for Thou art my only reason for existence, my one goal, my single support. I am like a timid bird not yet sure of its wings and hesitating to take its flight; let me soar to reach definitive identity with Thee.
The text above is quoted from the Third Edition, 1954 (translation by Rishabhchand Samsukha)
This book is freely available at https://www.auro-ebooks.com/prayers-and-meditations-1954-edition/