Explanations of how therapy works, and content normalizing common experiences without diagnosing. Because testimonials are restricted, credibility comes from demonstrating understanding rather than showing outcomes. Two posts a week on one platform outperforms daily posting.
Because testimonials and outcome claims are constrained, credibility online comes from demonstrating understanding rather than showing results. That turns out to be the more useful signal anyway, since a prospective client is trying to work out whether you will understand them.
Two kinds of content do the work:
What to avoid: anything that reads as assessment or advice for a specific person, and anything that could be interpreted as a client statement about their experience.
On self-disclosure, a useful line is to share your perspective freely, your history rarely, and nothing you would not want a client to raise in session.
Two posts a week on one platform beats daily posting, and it protects you from the burnout risk of performing online while doing clinical work.