I'm away from my PC at the moment ,so won't be a long post but I couldn't not comment on this.
I think I could have written 90% of what you've written myself. Yep I too have gone from being too scared to get on a plane to flying one on my own.
Even now, after far too many hours , I still get anxious when soloing. Even last week I was on the verge of turning back after dropping off my instructor. I still have to remind myself to breath out there.
Once I do breathe it call comes flooding back,the training ,the ability , the confidence.
What you have done is truly amazing. Learning to fly in itself is a phenomenal achievement , learning to fly when you have been so scared adds a whole other level.