My therapist does CBT totally different. He starts with what is my negative thoughts and specifically mention three frames pertaining to that thought. When he mentions ideas he always ask me if those are believable or not. He says we have to find reframes that seem believable to me. If not, it is not going to work. I could be wrong but it sounds like your therapist is just listing the kitchen sink of positive affirmations. Maybe if they were focusing them on your particular issues and making sure that each one that you are working on is believable to you it would be easier. I also find that the CBT reframes don't necessarily work for me right away but my therapist says to just plant the seed and eventually some of it might start growing. I have found this to be true usually months later things will start clicking in my head but again if they were never halfway believable in the beginning it's useless.