F line question

Unintentional model my feeling line is FEAR A line is worry. I then changed my thoughts, etc to make an intentional model for my circumstance. As I was writing a few sentences about my feelings some questions come to mind…..if FEAR is an allowable feeling and we should sit in that and avoid buffering for example when that comes up…..when I am working on a model I am working on changing that feeling by changing my thoughts…doesn’t that imply it’s something I don’t want to feel or allow since it comes from thoughts that aren’t serving me?