I have found that it is a two steps forward, one step back progression many many times. With this ingrained knowledge I have been better able to make sustained progress as I know that it is easier to return to the point I left off at after each set back. Although always daunting again after a set back you will soon have a good understanding of a route you can take to gain confidence. So once you know from experience that you can and will make progress again, you will learn that set backs are normal and progression will happen again soon