Whether or not they are hard depends on the individual person's ability.
I'm learning disabled so for me such things are very hard.
I'm interested to hear from other people who find such things hard and / or who find that working on tasks they find difficult has a temporary  'knock on' effect on their ability to perform other tasks that are normally not difficult for them, and also any theories as to why this is.
I believe I mentioned this before, but my daughter has very pervasive learning disabilities.  For her, aliengirl, when she is frustrated with a task, she just stops being able to perform at all.  At school they have said she was "spacing out" but if you asked her, she would explain that she was thinking.  She seems to get stuck, and even if the class moves on to a new topic, she is unable to get started back again. Â
For her, I would say it is a case of disorientation, which I read about in "The Gift of Dyslexia".  But I am not completely sure on that, and hope to find out more at her appointment in a couple of weeks!
Ah, this is exactly like when I was in elementary school! I would be working out something in my head (such as the meaning of the words a teacher said), and stare for a long time. When I was 10, I would always lose my pencils, so when we had to do an essay, and I couldn't find my pencil, I would spend an hour coming up with what to say, and then finally the teacher would come over and ask me why I wasn't writing, and I'd say the line I'd rehearsed, with some gestures, and I would get a pencil.
I know there is a non-verbal learning disorder; is there a verbal learning disorder? Or is that just part of me being autistic? I have what's described as "low normal" verbal IQ score, about 80, though this score was obtained when I had had a day ot think over the questions, process sleep on it, and get the questions read again to me and let me type responses. However, my spatial performance score was around 120, so I guess it averages up to about average, even though a 40-point difference is probably not the average pattern.
I also am a lot slower at carrying out certain things, and learning the kinds of tasks like multi-step things (I NEED written and detailed instructions, and until I'm quite used to something I'll need someone there to help me along). In these respects my dad is quite similar to me, though he generally gets the hang of things a bit quicker (though he is middle aged and I'm less than half his age).
Speech is not always reliable for me, though when my comprehension of spoken language goes offline, generally I use things like echolalia, and recently I've begun to articulate to people during these times that I genuinely can't understand the meaning of their words (usually for me only one - receptive or expressive - speech goes out at a time).
People have a hard time adjusting to this development, though, as before recently I tried my best to hide my difficulties, such as by pretending to understand, because I was ashamed and also because I thought people wouldn't understand my difficulties because I am generally considered bright because of writing ability and math ability. Ironically, it's because of various receptive and expressive difficulties (in addition to stigma of being unable, either at times or most of the time, to do things considered simple by most people) that it's taken me so long to articulate this.
WHen I was in elementary school, and I had trouble understanding what the lunch supervisor ladies where telling me, and didn't respond to my name and "over"-reacted to being touched, they would say, "stop playing games, we know you're not stupid" and I knew I wasn't playing games, and had no idea what game they thought I was playing. This was about age 7 to 12, I wasn't diagnosed until I was 10. I got a whole lot of that, particularly from substitute teachers, administrative staff, counselors, etc.
One time my vision problem, while unlike autism is clearly visible (ironically enough) as I've worn glasses not contacts, was similarly ignored, when I was in the computer lab and my glasses I accidentally knocked off my head when I was stimming, and I asked for help to find, as I didn't want to crush them with the chair or my feet or knees or something, and she kept telling me "they're right there! You can see them, they're right there in front of you" and pushed me by my back forward to the ground. I stumbled over them, but fortunately they didn't get broken.
That was when I was 12; 4 years earlier I'd gotten a pair of glasses broke by a bunch of people at the lunch table pushing me off and I fell to the linoleum and there was a loud crack and my glasses were no more, luckily I had a spare but that really sucked too, since I really can't see my way around without glasses.