In the heat of the moment = without thinking because they are angry or excited.
- Don’t say anything in the heat of the moment.
- He didn’t mean it ; he said it in the heat of the moment.
- We all do things in the heat of the moment which we then regret.
Set the world on fire = to do something wonderful or exciting things ; to be extremely popular/famous.
- As a girl, Janet dreamed of setting the world on fire as a famous actress.
- A: I am not very ambitious . I don’t want to set the world on fire.
- B: You don’t have to set the world on fire. Just do a good job.
Make waves = (1) create significant impression.
- He has already made waves as a sculptor.
- She has a history of making waves. She is the first woman in India to get the first place in IAS exams.