have the right idea

その考えが正しい・その調子です（その調子でやればうまく行くはずです

1.

On some issues, Europeans have the right idea, while Americans are misled.
In many important areas concerning liberty the Americans have the right idea.

(click here for original context)

2.

I think you have the right idea - eat right and exercise is the way to go.

3.

You have the right idea about communicating with your co-workers and continuing to
learn from them. That way you will surely get used to your new job.