Don’t waste time worrying about things that have already happened.
Не трать время на переживания по поводу того, что уже произошло. (Ne trat' vremya na perezhivaniya po povodu togo, chto uzhe proizošlo.)
"Don't cry over spilled milk; learn from your mistake."
"Не плачь над пролитым молоком; учись на своих ошибках." (Ne plach' nad prolitym molokom; uchis' na svoikh oshibkakh.)
to reduce the time needed for something
to cause change in a situation to make it better
As I understand; based on what I know
with sincere gratitude
to prepare energetically for something
to understand something that is complicated or unclear
