Please stop and watch this video.
This is acting. If you have ever considered acting, seen acting or judged acting, watch this. This is a scene with Meryl Streep from the film "Still of the Night." It’s done mostly in one continuous shot, and Meryl’s grasp of her craft (even at such a relatively young age) is staggering.
[If you ever need a monologue for an audition (around 5 minutes) this would be a brilliant choice.]