For those just starting.
It will be a long and hard road, but worth it imo
I was on a recent course, we had aproxx 50% move into final field and it looks like all will rate. So if you work hard there is a good chance you can make it.
There will be times that you just "dont get" something. Keep plugging away, its the kind of stuff that will just click at a certain time, sometimes only a week before the exam
If you dont make it, its probably due no fault of your own. Not everyone can do this job.
Good luck