I've had it since I was a kid, but much better these days.
Used to go to hospital for a nebuliser when I had bad attacks, but once in 1990 I had such a serious attack I nearly died - but didn't know at the time that you could die from a asthma attack. Had I known, I'd have panicked that bit more. I was fighting to get the tiniest, tiniest breath.
I was rushed to hospital (800 yards away, luckily) by my flatmates, injected with steroids, put on an intravenous drip and given an oxygen mask. Fucking scary stuff, but recovered my breathing fairly quickly after that. The next morning a nurse sat me down and explained the severity, and how you can die from attacks.
I was put onto a steroid inhaler after that, and since then only had a couple of minor attacks. I take the illness a lot more seriously these days.
I got sports asthma so I have a puff before any matches. My peak flow was 650 I think.
I used to do the same. My peak flow was 650/700. I once got sent off (second booking) for taking a puff of my inhaler on the pitch without the ref's permission!