I tend to reality check by keeping the idea in mind that I may be dreaming right now. My reality check whether it be to read a page in the newspaper then look away and re-read it to check for weirdness is always done from the standpoint that I AM dreaming already.

You cannot trust yourself as to whether or not you are dreaming RIGHT NOW YOU ARE DREAMING!...... Without proving that you are not.

I am LDing a lot at the moment and there is no better feeling in the world than to do a reality check and think "Wow, I AM dreaming".

I think the trick is to have moments every day where you say to yourself 'I have had dreams that seemed as real as this, I must check now'.

Never trust reality, if you do you won't go lucid by checking it.