I don't think it's ever too late to change your career. In the end you're dead so you mis' well do what you enjoy while you're alive. If you fail you can always become a successful banker and swindle people out of their hard-earned savings and assets through inflation and ponzi schemes.
Besides park-ranging, I hear with the economy picking up (probably because the Obama Administration is manipulating the pre-election money supply), there should be more openings in lion-taming to boot, and you could probably do that bootless as part of your gimmick. It would be sad to be party to the rampant doping going on among lion athletes though. Maybe you could try to tame wild, fully alert lions in a nature park, thus combining parkranging with liontaming to become a lion taming park ranger, or a park lion taming ranger or a ranging park lion tamer. The job would never be routine with so many options, plus the thrill of routinely running from them barefooted.