i have only been driving for three years and still only take the car out every fortnight or so (had to buy a big battery charger thing as car battery keeps going flat). It's principally because i don't need it that i don't take it out but the only thing is that i don't really get to put in a lot of practise.
i really think i am a good driver, but i do get scared about it. if i'm going to go for a drive somewhere i definitely get tense about it in advance, and it takes me a good few minutes to relax when i start.
a few things i always do are...
i always make sure my first few mins of driving are the same, so regardless of where i am going i drive a little detour which takes me to a big traffic lights junction where i know i'll be stopped and will get a few seconds to compose myself.
i actively seek out traffic lights cos i feel they give me a break. i used to get especially tense at lights, you see, so i just knew that i needed to shift my thinking and make the negative into a positive. they help you to turn corners, they force you to stop and think. i love 'em.
i NEVER do anything flash. i always keep to the left-hand lane unless i am turning right imminently.
i always familiarise myself with the route, using map point or the aa guide thing, but i refuse to get stressed if i take a wrong turn. i just pull in and sort myself out. who cares if i'm late? i;m safe.
i put some music on, nothing too mental. actually it tends to be the polyphonic spree at the moment cos it has a kind of 'wall of sound' thing going and the baby likes it. it's my car music, and it relaxes me.
my brother is a paramedic, and the way they are taught to drive at speed is that you 'throw' your vision out like a wide fishing net, to see everything but not in detail, and then you pull your vision back in to see more of the detail around you. apparently this is good becasue your brain is able to filter out the extraneous stuff as it gets closer cos it's seen it before the first time. might be good for the pinball machine aspect.
there are lots of other things i do, but the best, best, best thing i ever did which allowed me to get started in the first place (forgot to say that i passed my test a good year before i started driving so i ws shit scared to begin with) was i went on holiday to the country for a couple of days. drove all the way there, and when we got to the island the roads were quite wee so i had to really pay attention. it was the best practice i could have got, and everyone was so nice (lots of waving at passing places, lots of nods of gratitude, not like in the city) and i remember feeling like a totally different driver on the road back home from when i left. you just don't get enough of a chance to make progress in the city, it's all too stop-start, so you don't get as good a 'feel' for the car.
anyway, that was the best thing i did, i still get nervous but after a few minutes i absolutely LOVE it. good luck and sorry this has been so epic.