I personally think that is one of the main messages to give when learning friction fire or anything for that matter. If you really want to master it, then you need to keep practicing, experimenting, further your knowledge and learn from others. It is harder nowadays to learn "old" skills as the skills aren't passed on down from generation to generation anymore, so it's starting from scratch but learn from others, review what you are doing and keep trying.
Today I managed 2 embers with the hand drill but I know that the next ember may not be as easy. I put a post on the Primitive Fire UK Facebook page, and acted on some tips. I had success today, but I know I need to remember what I did right (and wrong) and learn from advice given by others.
I need to source some more spindles, a little bit thinner and practice on the technique to try and use more of my hands, and as one person said "relax into it!"
Keep going, and you'll get there. As can be seen here, I say a little thank you at the end and remember my ancestors - for me it's more than just a means to lighting fires. Everyone learns friction fire for different reasons, and that's all good!