Yes, and I've learned to enjoy the difficulty of it. There's pleasure in the process. If I can start early enough on it, I'll hyperfocus for a few minutes (25-35 minutes), take a walk / stretch break, come back to it and hyperfocus, repeat until it's done. :)
These courses may help:
Writing for Business -
It's less about writing for business, and more about writing succinctly.
Learning How to Learn - Discusses the neuroscience of learning and goes through some techniques to make the extremely difficult things more interesting and fun to do / learn.