Ben Murphy has announced his retiring after his loss to Martin Gethin for the vacant British lightweight title last week.
The pint-sized powerhouse was stopped in the ninth round of last week's Walsall showdown.
"I don't think there's much left," Murphy said.
"Physically, my body feels good, but the passion and drive aren't there any more.
"I had to wait around a long time to get my chances and maybe that's why the fight in me has dwindled."
Murphy, 32, twice boxed for British honours after joining manager Mickey Helliet.
Back in December, 2011, he challenged Ashley Theophane for the British light-welterweight championship at just four days' notice and after 10 rounds, Murphy was ahead on all three judges' scorecards.
Theophane rallied to keep his belt with a dramatic 11th-round stoppage and Murphy went on to end the unbeaten records of both Tony Owen and Phil Gill to secure another British-title chance at 9st 9lbs.
His 16-fight record (9-6-1) also shows he handed Lewis Smith and Gary Buckland their first defeats.
Buckland has gone on to win the British super-featherweight title.
Murphy also twice boxed in Prizefighter.