I have just crossed 2000 blitz!!! The last 50 points were the hardest and most mentally draining. I found the key was more speed. I increased the amount of bullet games and found myself winning more time scrambles. After rubber banding between 1850 and 1950 for a good few months it is a relief to have crossed 2000.
Additionaly, above is my best ever win against a 2100 rated opponent although I was completely lost for most of the game, the chess speaks for itself. If anyone needs any help in improving their blitz, I am happy to do it for free.