I've gone for only when something reminds them. EMDR T says " this reminded me of you " and says what it is and why. Regular T once said " you've been on my mind " . I do read T bloggers and one said she was exploring why one client was on her mind. If my T was exploring why I was on his mind I'm self exploring and equally wondering how I've got to be on his mind. But I don't know if he knows this - I might tell him !