Does the underlined part sound OK?
You need to change how to do it.
The given sentence is not right. "
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
The given sentence is not right. It should be: "You need to change how you do it."
The phrase "how to do it" is used in a positive sense only, as in:
"I'll teach you how to do it."
"You learn how to do it by actually doing it."
Thus, it's not used together with the word "change."