Those failures have been hard for the Blues. They have been excruciating for Backes.
"We've had some really good seasons and some disappointments in the playoffs," forward Ryan Reaves said. "That has to weigh heavily on everybody, but it has to weigh heavy on the leader of your team the most. It's obviously not your fault, but when you are the leader you bear a little bit of a heavier load when something goes wrong.
"You can tell that he has really taken it upon himself to make sure we play the right way."
Those lessons were often painful, but they were necessary for Backes to evolve into the player, and leader, he has been this postseason. They also were necessary for the Blues to evolve into a championship-caliber team.
"All of that seemingly has come to a place now where it's making it all worth those struggles and those lessons that we've had to learn the hard way, to now be able to get a chance to do what we've set out to do for the last 10 years," Backes said. "All the meetings, all the time and struggles we've had have led us to this point to where now we've got eight wins to win a Cup.
"But we've got to take them one at a time."
The focus on the next step is perhaps the biggest change in Backes, teammates say. He no longer worries about what he can't control.