That's the ticket.
That's the ticket.
That's the ticket" is an old-fashioned English slang expression used to affirm that something is exactly correct or the ideal solution. It's like saying, "That's exactly what we needed!" in a cheerful, approving tone.
That's the ticket, you've fixed it!
You've fixed it perfectly, that's exactly what was needed.
You won the game? That's the ticket!
You winning the game is exactly what was needed!
With that attitude, you're going places. That's the ticket to success!
With that positive attitude, you'll succeed. That’s exactly what you need!