In the recent research report, Motivating Goal-Directed Behavior Through Introspective Self-Talk: The Role of the Interrogative Form of Simple Future Tense, psychologists discovered that the linguistic form of your internal dialogue impacts your external performance. In fact, there is a significant difference in performance depending on whether you are using declarative self-talk (I will do 250 sit-ups!) or interrogative self-talk (Will I do 250 sit-ups?).