Yes, it can be slow and... frustrating. Don't give up. I had quite a few steps back. At first, I raged (mostly against myself and my own stupidity) but it made things worse. A lot. So, I decided to focus only on what is improving/has improved. And to this day, most of the time I can go through any setback (and more important, through me screwing up ;) without much difficulty.

Edit: typos + clarifications