I've had few regrets over my life, but there are a couple or three things I would dearly have loved to rethink or changed.
The first one would be not to take the route I regularly took on the A34, because the last day I ever spent travelling to work when I was 49 was cut short by a motorist smashing into the back of me at the interchange to the motorway while cycling to work at Trafford College (from Poynton), the lady told the police she didn't see me, despite wearing bright coloured cycling gear); I was left with a broken back, lost 4 inches in height and sustained brain damage that left me unemployable and on various drugs for the rest of my life.
Work a little harder at my first degree, I lost the chance to do
I lost a virtually guaranteed and sponsored place at Oxford to complete a Doctorate on parasitology, which had been handed to me on a plate, on the proviso I gained a first-class honours degree. My lecturers were expecting me to succeed, but I failed to get the necessary first-class honours degree. Instead of devoting my time to serious revision, I'd stupidly frittered away most of the time in the months I should have been revising leading up to my final exams, going to rock and indie clubs in Manchester (Jillies and The Banshee on Oxford Road, and The Ritz, or going to concert tours at Manchester's Apollo Theatre and further afield and when not making a fool of myself on the dance floor or being deafened by the likes of Alice Cooper, Hawkwind, The Cult and other rock and Indie bands I'd be hanging out with friends in the universities British Bike club (only myself and one other actually had British bikes; mine a Triumph 500cc Tiger and my friend had the triple Trident, the rest of the club had Japanese and German bikes)
The only other thing I would change would be not to turn down the offer of a job in East Africa, running a tsetse fly control program; (thanks to my entomologist lecturer who recommended me for the job). I'd just started seeing new girlfriend at the time and was smitten, so turned down the contract, which would have seen me in Somalia for a year.
Apart from the above foolish endeavours and omissions, I've been very lucky and content, with both my social and family life.