I liked the idea of lucid dreaming but I've never had any success.
I tried once to make a dream journal, but when I'd wake up at night, I'd be so tired I wouldn't want to write in it. So, then I got the super bright idea of keeping my little digital recorder by the bed and just recording my dreams when I woke up. One morning, I was excited to see what I'd recorded the night before and I rewound and listened. All I heard was some incoherent mumbling followed by snoring and grunting.
But, some people claim to have success with the practice so you should try it.