Im not sure if anyones PM'd you a reply so ill say anyway.

You just have to push yourself into thinking of what isnt possible and what is.
e.g If in reality your hand exploded, even though its so stupid u could punch yourself for not realising it, would you accept that it would be a dream, i doubt you would. You would think of a rational reason(either that or run around crazy calling for help in which case you wouldnt think of anything). This is because in reality you think/know there MUST be some kind of rational explanation, science has taught us this.

Now, in a dream its the same thing. Because you think that its reality in your dream you create false rational reasoning.

You just have to really start changing how you think, and really THINK whether or not its a dream when you do a reality check. Dont just do a "am i dreaming" and automatically respond with "no", or do something physical and automatically assume your not dreaming because nothing crazy happened. You could just be thinking the same thing in a dream and miss your chance of lucidity.

PUSH YOURSELF DAMNIT!!!!!!!!