Thread: Help!

"How do you induce Lucid Dreaming" is a very open-ended and general statement. DiLD/WiLD/MiLD are probably the most common techniques used. Anymore in depth information can be easily attained by casual browsing the forums or DreamView's Wiki entries.

It may be possible to have a 3 hour dream. I'm not sure if there is anything actually physically stopping you.
But, I will venture a guess and assume that you will never have one yourself. I have never heard of anyone having a continuous 3-4 hour lucid dream, even by lifetime Lucid Dreamers.
Although, it is very possible to chain multiple Lucid Dreams together by bridging WiLD attempts. It is fairly difficult and is not a recommended technique by a novice.

It's actually quite common for the first lucid dreams a person experiences to be short, blurry, fussy, unstable or with an only small degree of lucidity. This is because your consciousness is not used to be overlapping your subconsciousness. With practice, this will end. It also helps to go to bed excited, but not to become over-excited. At some point, the lucid dream will still amaze you, but you will be able to remain somewhat calm and carry on.

About what technique to use, consider reading Mancon's guide. It explains in detail each technique, which one fits you best depending on your preferences and sleep. Although if I may add, I would advice you to practice DILD in conjuction with any other technique. The goal here is not to over-think, it's just only to remain (or try to) aware for the most time possible, while encouraging acts like reality checks and question your surroundings. Just the awareness of being aware is very helpful because it doesn't depend on any scenario or elements to kick in a bit of lucidity.

Good luck

In lucid dreams, time is not really linear. So you can't pin point how long they are if they are lengthy.
I recommend MILD for you (which is a type of DILD) or DEILD. Both require practice though.