I'd look at the paraliminals for something like that. Possibly the Belief tape. I personally don't recommend pushing through the bodies pain threshold. It's there for a reason. To warn you your a risking permanent physical ingury. Used wisely to build up stamina and endurance I think the Belief tape could be helpful as might the New Behaviour Generator (to get you into a proper training program). Check the paraliminals you might find one that resonates with you, that might help you toward your goal. It is better to use a tool to build up your endurance and stamina (ie. build on the skills you already have) than to try to get rid of or ignore something that may well be in your best interest to be aware of.
Alex
