Pray for the love which allows you to see the good in your companion. Pray for the love that makes weaknesses and mistakes seem small. Pray for the love to make your companion's joy your own. Pray for the love to want to lessen the load and soften the sorrows of your companion
It's like anything in life, visualizing the old man you're going to become: As long as you have a clear picture of that — the life you want to lead — eventually you'll probably get there.