We often come across gibberish and telltales playing in our head consciously or subconsciously. Would there be any effects ? Yeah, definitely because every thing bores consequences and every action has an equal and an opposite reaction, as put forth by ISSAC NEWTON, which I believe could be applied to the mind as well.
Worry, trepidation, disconcertion are build-up negativity in our mind. They seem to appear and then vanish as soon as the self-possessed emotions take a pause but they also return within no time as a habit. This reasons for our dis-contentment in the long run. No matter how delightful a situation is, a voice in our head rings uncalled bells stating something bad might happen; how come everything is going on smoothly, come on there has to be a blunder or a hurdle.
It happens with everyone and is very usual, but still it implies diffidence. People argue that predictions and precautions plays a pretty huge deal in practical affairs, and it is cent percent true, but no where it is mentioned to imagine awful incidents happening to us. Feeding negativity or worse, letting the mind control us is also a pretty huge deal. Living in the present moment along with controlling the mind, eliminates imaginary fears and tribulations.

Life is simple, life situations come and go, few pour bundles of joy, few bring trails and few are filled with melancholy. Acceptance makes them beautiful and our mind contented. This way our body releases positive vibes, and trashes away self-built mind slideshow.
That is why, the feast continues in a contended mind.
Bliss.