That’s the ticket!

that's the ticket

That is exactly the thing that is or was needed or called for. That's the ticket, yes, please lie down. A short nap will have you refreshed in no time. That's the ticket, Chuck. Great idea!
See also: ticket
Farlex Dictionary of Idioms.

That’s the ticket!

exclam. That is exactly what is needed! Good! That’s the ticket! Now you’re cooking with gas.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • that's the ticket
  • That's the ticket!
  • just what the doctor ordered
  • twenty winks
  • draw down
  • forty winks
  • a lie has no legs
  • catch a snooze
  • snooze
  • new person