RCs: The perfect way to induce LDs
Many people don't get results solely from doing RCs (Reality checks), and I think that's because they don't do them often enough. I mean, they should be done very frequently so that they are just cemented into your head; and then pretty soon you'll be RC-ing all the time without even thinking about it.
In my opinion they should be done about once every 5 minutes. If you get about 6-8 hours of sleep every night, then that mean you're awake for about 16-18 hours a day. If you do a RC once every 5 minutes while you're awake, then that's about 192-216 RCs a day. I know this seems a little overboard, but you will get results.
After falling asleep, you're first REM cycle (normally the dream cycle) will last about 10 minutes, so you'll have 2 opportunities to RC and become lucid. After more dream cycles, you're REM cycle may get up to an hour long (that's 11 more RCs, and it only takes 1 anyways!) It's foolproof. Of course when you're sleeping you're not as aware of what's going on, and you may forget to RC. But after a few days of 192-216 RCs per day, you will do it in a dream, and you will become lucid. The more LDs you have, the better you will become at them, and the less and less RCs you will have to do daily.
Once you have had about 10 LDs using RCs, you can probably lighten the amount of RCs a day to about 1 every 10-15 minutes. A lot of people may not realize this, but the more DILD (Dream-Initiated LD) you have, the easier they become, and you'll find yourself becoming lucid almost by accident. DILDs become second nature, and you'll start to notice certain details that alert you that you're dreaming that you may not have noticed before. Eventually, depending on your success rate, you can stop RCing all together. You will have become so observational that you will already know you're dreaming or not just by looking around.
I believe that RCs are the easiest technique to attain LDs. DJs (Dream journals) require writing down everything and racking your brain to recall the dream, and it just turns into a chore. Then people get frustrated because they don't get any results and so they quit. RCs are very simple to do, and you don't need a pencil and paper to do them. There are so many different ways to RC, and you can do different ones every time to keep it interesting.
Of course another surefire way to get an LD is to WILD (Wake-Initiated LD). But again, these can be harder for people to do successfully. Not to mention, they require special concentration to achieve, and if you just want to crash and go to bed the normal, then you're going to need a DILD, which is where the RCs work.
I hope this helps :D