I have just ended a horrible dry spell... but hei! I'm back..

What is happening to me in my recent Lds is that ..I become Lucid " hey this is dream" and just a few seconds after I realize that I'm in a Dream the Dream starts to vanish/ disappear...the dream Ends and I awake).

How can I solve this problem>? how can I retain Lucidity? how can I stop the Dream form ending?..¿help?

Ben..