Personally, I have always had lucid dreams, and not on purpose. They began when I was a teenager and I am now in my twenties. When I tell most people about lucid dreaming they have no idea what it is, or think that I am crazy. In my first lucid dream I was in a mansion on a lake, and I walked past a mirror, to see that I had short choppy bangs that I did not have in real life. I thought to myself, “My hair doesn’t look like this! This must be a dream!” And then I woke up. Then it started to happen more frequently and I wasn’t scared anymore, I would start doing crazy things like flying which is a lot of fun, I get so mad when I wake up.
For my birthday one year, someone bought me a dream journal. I started using it every day and then I started lucid dreaming all the time. My advice is to keep a dream journal, because the more in touch you are with your dreams, the easier it will be for you to realize when you are dreaming. It’s also cool to look back at all the dreams you’ve wrote down. Some of them may actually mean something. I have had multiple dreams of friends becoming pregnant and then they do.
You have to write down your dreams as soon as you wake up. If you don’t, you will forget your dreams within minutes. That’s why you hear people say “I don’t have dreams. I never dream”. They most likely do, they just don’t remember.
The challenge for me is that sometimes when I am dreaming and I become lucid, my mind will try to wake me up. I have to almost pretend that I don’t know I am dreaming, as if my mind finds out I am lucid dreaming, my mind will wake me from the dream. That may sound weird but it does work. Like at first I would get so excited I would scream things like “Wow I am dreaming!” … Then I would wake up. But if I stay quiet and just keep the excitement to myself, I can usually stay in the dream for a while.
The more you think about dreams while you are awake, the easier it is to become a lucid dreamer.
Good Luck!