Does what I did, in prohibiting myself certain things, such as going to or speaking with a specific person, count as a divorce or a prohibition of my wife, knowing that it is an obsessive-compulsive thought and an internal monologue without a sound?

It is clear from the question that the matter is merely a whisper (waswasa) that does not result in divorce or prohibition. Therefore, one must turn away from these whispers and beware of succumbing to them. One should seek Allah's help and occupy their time with what benefits them in religious and worldly matters. You can refer to fatwas numbered: 52505, 86087, 82731, 31562, 59951, and the psychological counseling section on the website.