less said , the better
the less said, the better
It is best to say as little about a difficult or unfortunate topic or situation as possible (to avoid making it worse or dwelling on it for too long). Can also be structured as "the less said about (something), the better." And when it comes to the company's previous failed product, well, the less said, the better. Look, I don't like their plan either, but moping about it won't solve anything. The less said about it, the better.
less said (about something), the better
Prov. A way of indicating that you think something should not be talked about any further. Jane: How are things going with your divorce proceedings? Ellen: The less said, the better. The less said about my financial situation, the better.