Many peopleās long-term plans are very ambitious more than what is has to be.
Like for example, incase you weigh around 170 pounds and the plan is to reduce to 120, although you haven't weighed that much since 16 and now nearly 45, which isn't a proper goal.
The body mass index called in short BMI is a very good indicator to know if you have to shed some weight. The proper BMI variation range, according to certain international sources, is anywhere from 19 till 24.9. Incase your BMI is anywhere from 25 to 29.9, you should consider yourself overweight. All numbers above 30 range is the obesity range.
According to point of view, people need a sane weight loss plan which will correlate to the needed BMI according to your height, since this is the main factor that affects your BMI levels.