A good example on something

[Anna232]

Can I use "on" in my sentence? I mean by providing an example that person explained that.

I think she gave a good example on why it is hard to make hard decisions sometimes.

 

[Rover_KE]

No. Change ‘on’ to ‘of’.

 

[Tarheel]

I would probably say:

I think she gave a good example of why it's hard to make decisions sometimes.