Well done - it sounds like you're well on the way to sorting yourself out.
For me, getting over height anxiety is all about practice.
I loved the idea of flying for as long as can remember, but the few times I flew as a teenager, I was pretty nervous. I managed to get my gliding solo with the ATC anyway.
When I started gliding again 10 years ago, I was initially very nervous. The higher we flew, the more nervous I got, though I loved the actual flying. I found aerotows very vertigo-inducing.
Over a period of three or four years, flying regularly, I found I simply got used used to the view out of the aircraft. I stopped feeling unsafe. New situations can still cause nerves, and frankly I regard aerobatics as a great spectator sport, but regular flying is pure pleasure. I hope I'll always get appropriately nervous if the situation demands it though!
good luck with the rest of your training.