i find that i have to tell myself to remain chilled during my rides before i set out and it does help. if i don't, i'm liable to get all huffy with the first bit of crap driving i'm subjected to, which isn't good for anybody. example:
i was about 15 miles from home last sunday morning, on the second lap of my loop - i'd set out dead early and the first lap was wonderful, practically no traffic and what there was, was all good, anyhoo, 15 miles from home and there's a filter across my lane on a fairly busy part of the a10 - couple of passes approaching the filter are alright, then some doofus, not seeing the car sat in the filter as he tears up alongside me has to drop his anchors...i looked back and he was still sucking my wheel so i gave him the old coffee beans...he then pulls up alongside me (after the filter) with his wife and kid in the car! he's got the window down and i say, 'get on with it then you dangerous sod', he utters something unintelligible and his wife says to him, 'just leave it, come on' to which i say, 'go on, get on your way, listen to the wife' and he roars off in a huff...now, the coffee beans were a bit of a red rag to a bull, i'll admit, but it's the fact that not content with one crap piece of driving he then decided it was quite alright to test my bike skills by driving a foot away from me at 20+mph...the doofus. didn't have the camera with me either which was an @rse but i've decided i'm not sticking anything to my shiny new helmet

anyhoo...must remember to tell myself to remain chilled.
end of story...sorry i had a bit of word vomit there.