Does divorce occur through self-talk, and does the wife become unlawful in this case, and is this considered disbelief? And how does one cure oneself of these whispers?

We ask Allah to heal you, grant you well-being, and remove the whispers from you. The divorce of one afflicted by obsessive whispers does not take effect, even if he utters it while overwhelmed. So, for one who has not uttered it at all, it is even more fitting that his divorce does not take effect. Your wife is not forbidden to you, nor are you divorced by what you find of inner monologues, nor are you a disbeliever, for your heart is content with faith. Completely disregard these whispers and pay no attention to them; this is the best way to treat them.