At times, I get that "anxious" feeling while watching a tense drama - but it's not a problem, because I know, it's a just a show! But imagine, if you were watching a movie, and you forgot that the scene was just an illusion on a screen. Well if that happened, all of sudden it's real - the villians are a BIG problem and you'd run from the theater in terror.
The fantastically different approach the 3 Principles offers in self-help is the relief from having to act, talk or even think in a different way in order to feel better. The 3 Principles point to the ridiculousness of trying to change your feeling.
The simplest, fastest most profound way to a better feeling is to realize* that all feeling is borne through the power of Thought & Consciousness.
We are designed to eventually wake up to this.
Give yourself a break, because soon enough, you'll remember that all your uncomfortable feelings are just a bad movie tricking you for a moment.
And you'll be free right then and there to change the channel.
(*Realize - the G-d directed capability to become aware)