Heart set on意思
"Heart set on" is an English idiom that means to be completely determined or focused on achieving or obtaining something. It suggests a strong desire or intention to have or do something. The phrase implies that someone's heart is fixed or settled on a particular goal, and they are not likely to change their mind easily.
For example, you might say:
"She has her heart set on becoming a doctor."
This means that she is determined to become a doctor and is not likely to consider any other career path. The idiom can be used for any kind of goal, from a personal ambition to a material object someone wants to acquire.