Well, as you've noted, one's tolerance does increase with age and exposure (it's known as 'cynicism', or 'becoming jaded'), but if you're talking about exercises to eliminate it, I wouldn't hold my breath. IMO, the 'just try harder' approach, for someone with a neurological disorder, is very unhealthy, and may ultimately result in things like ulcers. When you suppress a strong emotional reaction, you're not eliminating it, just internalizing it, and that can be physically damaging over the long term.
I find I can tolerate social situations as long as I need to, though it may mean standing in the corner, waiting for the Hell to end, but the longer I endure it, the longer a period of decompressive solitude I'm going to need afterward.