Waves to McMen71
Oh and I forgot to thank TheGodmother for our group name, the PO Ts 
I should probably also explain that the "holding on to the end of the rope" reference comes from Billybagpuss's post at 01/04/2019 15:09 in the previous thread linked above which quotes a letter from "a" teenager who entreats us parents to stay solid and strong and hang in there while they thrash about and fight the line as they make the difficult transition to adulthood.
Several other helpful things emerged from the previous thread. First, so many of us are experiencing the same challenges or extraordinarily similar behaviour from our teens, in all sorts of different households and circumstances, that it can't all be down to poor parenting, despite what a tiny fraction of posters tried to tell us!
So, whilst acknowledging our own mistakes and less than perfect parenting, and trying to find solutions and expert guidance, we also need to try and ditch the guilt and feelings of failure.
Second, we feel isolated because there is a tendency for parents of teens not to share the difficulties they are going through in rl, as openly as they would about a toddler or baby.
Third , it is evident there isn't as much state help available for teens as required, CAMHS for example is very over-stretched and under-resourced.
Also, it was suggested by some posters distancing ourselves from the very personal remarks and being slightly less "available" can be helpful and Tarragonsauce (25/03/2019 17:04 ) said that picking our battles, addressing our own symptoms, keeping in mind (with reference to school non-attendance, exam failure, bf issues) that there is more than one way to skin a cat, and remembering that "this too shall pass" can be helpful strategies.
Daintytoes explained an extremely helpful model of parent-child interaction at 07/04/2019 23:O6
And Corona posted a helpful guardian article at 05/04/2019. 09: 19
And last but definitely not least, thank you to each and every contributor to the first thread. I don't think I have ever read a Mumsnet thread that was so heartfelt and where each
poster was so helpful, all at the same time! Most of all, it's just so great to feel we are not alone 