Put on the brakes and prepare yourself for some backtracking as this eclipse sends a signal that you need to exercise self-restraint.

刹车，准备好原路返回，因为这次月食显示你需要自我克制。

youdao

The parties involved should exercise (self -) restraint and prevent the situation from getting worse.

有关各方应采取克制态度，防止事态扩大。

《新英汉大辞典》

Or can something be done to restrain companies, or at least to get them to exercise self-restraint?

ECONOMIST: What role should corporate citizens play in politics?