I also have a teacher by the way and he spends most of his time telling me to get rid of tension, relax and dont get totally depressed about making mistakes - "get over it". Unlike him though I am pretty anal and very concerned about playing correctly and "all the notes". Nevertheless I believe he is improving my technique.know how to get faster. My rh is much better than my lh and where I struggle are arpeggiated lh runs (playing fast).
AndrewMargaret Wacyk's blog site https://margaretwacyk.blogspot.com/is quite amazing - I have become a follower as well as ordering her book "Ultimate Piano Playing". Thanks for recommendation.