Be onto a good thing

Pro Tip 1/3

Positive Connotation

This phrase suggests a positive outcome, often with an element of luck or unexpected success.

I can't believe the demand for my cakes; I'm onto a good thing here.

Pro Tip 2/3

Informal Use

It's an informal expression more suited for casual conversations than formal writing.

When she said I'm onto a good thing house-sitting for her, it felt casual and friendly.

Pro Tip 3/3

Not Always Financial

While often about financial benefit, it can also refer to other advantageous situations.

Studying with her has improved my grades; I'm definitely onto a good thing.