From a letter:

Even if all your complaints about your spouse are well-founded and valid—show her your love, nevertheless. Show her unconditional love.

The sages taught that all our exile is due to the sin of senseless, unwarranted hatred.

When each one of us will start with unwarranted, unconditional love in our own domain, from there it will spread to all else that we do, and from there to the entire world, speedily in our days, amen.