I failed too. Went to a secondary modern which became a comprehensive, where I got 6 O-levels and a CSE.
But that sense of failure has never really left me.
I went to college to do A levels. Failed those.
Failed my driving test twice before passing first time.
Did a p/t course at university as a mature student (first year of degree over 2 years part-time). Failed the end of year exams. Resat those I'd failed and failed again.
But, one of the tutors suggested that I ask at the local poly to see if I could use the exams I had passed (3 out of 5...) in lieu of the A levels I don't have. So I went to see the admissions tutor, and was told no again.
Instead, I was told that they would take those exams I had passed and as long as I passed one of their first-year degree courses, I could proceed directly to the second year of their degree programme.
Which I did and graduated 2 years later with a BA (Hons) in English with History and a 2.1 pass.
This was a flash in the pan, because I never completed my MA, nor was I able to take up my offered place to do a PGCE - both of these were due to external circumstances but they still felt like failure.
I now have an undergraduate diploma in theology, which (much to my surprise) I passed...
I think I'm good at failing things, but it still hurts as much as it did in 1970, when I failed the 11-plus. It has fuelled my deep down sense of being utterly useless as a human being and I wouldn't wish this feeling on anyone.