I agree with superx.

Regarding to your question, Lucid Dreams are much easier to remember than normal ones because it is much more "realistic".

What time do you usually sleep? If you're a late sleeper and tend to wake up early with less sleep, I bet that's one of the hindrances of recalling a dream. As much as I would like to tell you a lot more, I suggest your practice dream recalling first. Check this out: http://dreamviews.com/community/showthread.php?t=66343

Hope it helps!