One of my favorite books is a collection of excerpts from Bl. Columba Marmion’s letters. I have been reading it again recently, and was struck again by the following passage:
If you have delayed giving yourself to Our Lord, well! repair that by giving yourself to Him now without reserve, with great fidelity and great generosity. And never fear that your past faults and infidelities will prevent you reaching the degree of union that God intends for you; in an instant He can repair all that.