Many people have very unrealistic expectations about weight loss.
Back when I weighed 160, the number on the scale was all that mattered. When you have a lot of weight to lose, it is probably a good enough measure. But if you keep going, eventually body composition is what matters, and that isn't measured on a bathroom scale.
For the movie "Black Swan," Mila Kunis and Natalie Portman both lost about 20lbs for their roles. These women were already thin. A good portion of those 20lbs were a loss of lean mass in order to achieve their svelte ballerina profile.
Natalie Portman said she barely ate anything. Mila Kunis weighed 95lbs. "I had no shape, no boobs, no a**," she told E! Online. "All you saw was bone. I was like, This looks gross."
In contrast, Hillary Swank gained 19lbs of lean mass for the role in "Million Dollar Baby" in order to look like an athletic boxer. According to some reports, she ate almost 4000 calories a day, 200 grams of protein, and 50 grams of carbohydrates. She also had a very intense weight lifting regime, but very little cardio.
Whether one or the other is more attractive is subjective, but it illustrates that scale weight alone does not determine body shape. What you eat and how you train makes changes in body shape.
Here's another example. Christian Bale weighed 120lbs for "The Machinist". He ate coffee and an apple.
He weighed somewhere between 190-220lbs for his role in Batman eating chicken, tuna, and steamed vegetables.
[Note: Bale is a vegetarian, and I had difficulty finding his exact diet for Batman. He has been quoted saying he ate chicken and fish for other roles like "Psycho."]
After getting the part for Batman, Bale said, "I couldn't do a single push-up and so we had months [of training] ahead of us."
According to his personal trainer: "He worked harder than anyone I've ever trained. Every morning he would look different from the day before."
This is where I got to when I made my push to lose the 'last 10 lbs.' If these people can change their shape, why couldn't I?
Where I am currently, my weight staying the same or going up slightly is probably what I want. And yet, I still have a mental block against it. Old habits die hard.
These actors all have specialized nutritionists and personal trainers to make them look this way. Most of us will never have this kind of personalized help.
If you want it, you have to do it yourself.