actions speak louder than words
what you do is more important than what you say
get sth off your chest
to tell sb sth that has been worrying you
follow your heart
do what you really want
to kill two birds with one stone
get two things done at once
feel like a new person
feel refreshed
that’s the last straw
my patience has run out
act your age
behave in a more adult way
better late than never
better to do sth later than not at all