Tonya has been working at a successful company for four years. Although Tonya has been with the company for a while, her anxiety seems to increase when she is at work. While the company is still successful and Tonya has a lot of co-workers who enjoy her company, Tonya still finds herself thinking negative thoughts about the company going bankrupt and her losing her job. Tonya even thinks that her co-workers secretly dislike her. What type of therapy would best help Tonya with her anxiety?