What civilian careers could a PSYOP Officer transition into?

Consumer Marketing. Making people buy stuff they don't like, and never wanted in the first place, but in the end become hooked on your products.

This is really just a guess, but with my experiences in life I think you would be qualified to be a marriage counselor.

If you decide you want to be a PSYOP officer, you will have basic skills in advertisement, marketing, journalism, broadcasting, cross cultural specialties, history, and cross cultural communications.
Its not a short term investment of yourself - you have to put in twice as much as the Army does put in. The schools you will attend are the very best - but they do not cover all the ground you have to cover - and every officer and NCO will tell you the same on that. You have to apply yourself more to become the expert in your trade. And the job demand for trained and seasoned PSYOP officers after they leave the military is never ending.