It took me a while to trust my T to the amount I do now. Not fully now or ever I think but it's pretty good right now. He's probably the person I trust the most. I think by him telling me not to just take his word for it to test him out and see if he follows what he says or if what he's saying really makes sense and is true. I think when he said this often it made me feel like he was more trustworthy because he wasn't just saying to trust him blindly. But then I started doing what he said and would test what he said and what he did and when I saw him do exactly as he said and when I tested his theories and they seemed accurate I trusted him more. Then when he started helping me figure out what was going on and sometimes would say how I felt without even a word from me or he'd justify how I felt without me saying anything about it then I started to trust him a bit more. So it really was his words and actions that made me trust him. It took a couple of years for me but now in the 4th year of seeing him things are going good for the therapy relationship.