I’m in agreement with you there Mrs.C. I don’t think it comes out of the blue. There are micro thoughts. So small that they barely even register as thoughts. We hardly notice them but our body does and reacts accordingly. The tiniest feeling feeling can do it. That’s what makes it so hard. Yes when we know we are doing something that will raise our anxiety, we are ready for it. Sometimes it comes and sometimes it doesn’t. But often when it’s out of the blue, we have experienced a feeling/thought so small and fleeting, it doesn’t register and it’s difficult for us to categorise it and make sense of it.