"I've never been more motivated than I am right now," Rieder said as Flames Training Camp kicked off with medicals and fitness testing Thursday at WinSport.
"Last year," he adds, pausing a beat, "wasn't what I envisioned.
"Or what anybody envisioned.
"But I'm a big believer that going through things like that builds character. Makes you stronger.
"Maybe you need to convince others to believe in you, but I certainly believe in myself. I'm glad it worked out and I'm here with the Flames now.
"I can't wait to get going."
Rieder is one of six players attending Main Camp on a Professional Try-Out (PTO), joining fellow forwards Devante Smith-Pelly, Zac Rinaldo and Alexandre Grenier, along with blueliners Andrew MacDonald and Eric Gryba.
His one and only, ill-fated campaign with the Edmonton Oilers last year is well documented. He went the entire season without scoring a goal after bagging 13, 14, 16 and 12 in the prior four years in Arizona and L.A., before returning to the team that drafted him in the first place.
It was a tough campaign made worse by a quiet off-season waiting by the phone - hoping it would ring, as he turned his attention to the gym and re-gaining his dependable, top-nine stature.
"It's tough after a season like that to enjoy your summer," Rieder said, "but I tried to work hard and stick to my regular routine, regardless of what was or wasn't in line for the fall."
Rieder had a couple of choices in front of him: Believe the nay-sayers and wallow in self-doubt, or press on, leaving an altogether grim season where it belongs - in the past - and get back on the right track, with the right frame of mind.
"One choice, really," Rieder corrects. "That's the way I approach it:
"Never give up."
Rieder isn't sure where the story goes next.
He's just thankful for the opportunity.
"I've got to get back to beating defencemen wide and crashing the net, bringing everything to the net," said the winger who, despite the barren output last year, has a career 7.4% shooting percentage.
"That's what gave me success early on in my career and now I've got to get back to it."
Rieder isn't the only vet fighting for a spot.
Smith-Pelly, meanwhile, figured prominently in the Washington Capitals' 2018 Stanley Cup victory, scoring seven goals and adding one assist in 24 playoff games, and is hoping to wear red silks at the NHL level once again.
"A lot of guys are sitting at home, still," Smith-Pelly said. "Definitely a weird summer.
"I talked to Brad (Treliving) early in the process, kept in touch and then talked again a couple months later. He seemed pretty sincere in that there was potentially a spot here for me to compete and make the team.
"I know I'm better than what I showed last year.
"I just need to go out and prove it."
Smith-Pelly signed a one-year contract to remain with the champs in the summer of 2018, but was unable to recoup the timely goal-scoring touch he tapped into the previous year.
Hitting the reset button proved as or more challenging as the Cup journey itself in the months after.