My problem is going through roofs. I dont know why I would even like to do that but every time I start flying I try to go out through the roof. But instead of that I just hit my head and decide to use the door…that’s boring…
My problem is to maintain my patience. I always run ahead doing something stupid instead of thinking about what I really want to do. 
My problem, is forgetting what I wanted to do when I become lucid, then I start to think about all the things I want to do, and its too much at once, and I wake up.
i myself find it hard to have sex in dreams 
but i quess its becouse i get over-exited and then wake up >.<
In my first LD where I tried to fly I had problems but after that I managed to fly by jumping, just thinking of it and using an invisible vehicle 
. Since then everything I tried worked but I didn’t try many things (got distracted by dream sex every time).
@ags_rule: Don’t try to spawn a jetpack just act like you have one and take off by pushing an invisible button or something.
I’ve still problems in finding my spirit guide or any DC who could give me useful tips… 
When the student is ready the teacher will appear.
Just hang in there you’ll find them. 
I tried to go through a mirror once to see what was on the other side but it was just a big black void on the other side… 
Lol same here I once flew into a mirror, it was pitch black and I felt like someone poured hot and cold water at the same time over me. So that’s also one of my main problem in LDs: going through mirrors without waking up in the end. Another minor one is to cut off my feet with rusty axes or knives (I use this to test the level of my lucidity). Even when pretty lucid, I’m still afraid to hurt myself one way or another 
One other major problem is the fact that I always fail to truly realize that the dream “out there” is never separated from me, the dream ego. No matter how lucid I am, I always fail to realize that, and yet, becoming aware of that is essential to reach deeper levels of lucid consciousness.
For me it’s always like a replica of the first side of the mirror, except in reverse, as if the mirror’s a window rather than a reflection. But everything’s different outside of that one room - it’s like having stepped into a different world entirely. I thought it was pretty straightforward, actually, but I guess it’s different for different people.
Inever had any problems with flying. In fact, with me it seems effortless. I do have problems with materializing objects or making people appear. I’ve even tried what some of the experts say by trying to find the object in a natural way like searching for it or meeting people by saying “when i walk around the corner i will see gilbert gottfried”. I’ve also tried to shoot a laser from my finger which didn’t work either. But i like to think of such situtation as someone like a wizard honing his magic.
kinda of topic but i’d like to grab the space in front of me and tear a time rip or black hole im my next LD.
Flying is a bit of an issue for me - losing my grip on the ground seems to make my dreams start to fall apart quicker.
I can’t seem to do anything sexual either - I don’t have enough time in my dreams (~5 min, this really sucks) to find a girl, so I try to create them… and this only results in the creation of random objects. Extremely random objects. When I do run into a girl, doing anything sexual results in the breakdown of the dream.
Last night, I was dreaming I was at the beach, and decided to try to create some girls in front of me - instead, I got a huge pile of fish. So I said screw it and had a barbeque 
and had no trouble creating the BBQ, beer, lawn chairs…
When I was a kid and dreaming, i used to think this was because I didn’t have any sexual experience to use as a template - which seemed to make sense - but now I have experience galore, and dream sex still doesn’t work.
I have trouble remebering to do things other than fly, I get lucid and I think, yay, I’m gonna fly. Also I can’t take off from the ground I have to jump off something even if it’s just a chair.
Changing gravity and going through solid objects are tough for me; Flying wasn’t too hard (I flew like superman in my first ld!)
I find hard pornography in my lds:)
The hard thing for me isn’t making things appear, but making them stay. Also, it is hard to make new locations, they have a tendency to look like somewhere I already know.
Flying isn’t hard for me. What’s hard is confronting my fears. I faced a few spiders once and then lost it. Or I’ll be up really high and lose it too. Ironically, I can fly no prob but standing on a cliff or something is too hard.
I have problems flying… I did it once, by jumping off a sky scraper. I fell pretty far before I flew over the street at an incredible speed.
heh only 1 LD so far so I can’t say what’s hard or not…
but flying wasn’t hard at all…I just jumped and started to fly.I couldn’t teleport myself though
what i find hard is gaining height in flying. At one point i will become scared i will fall down, so i usually stay at about 20 metres above the ground. That is, if i can get that high, i often seem not to be able to gain height.