I have been having trouble holding on to my dreams once I am lucid. I will become lucid, but as soon as I do either (1) things start to break up around me as though I am waking up, (2) everything fades until I find myself in blackness, followed by loss of lucidity (3) I will have a false awakening or "see" the back of my eyelids and "feel" myself in bed.

I didn't use to have this trouble so often, but now it seems the majority of LD's are like this. I have heard people say how vivid and expanded their dreams become as soon as they are lucid, but for me it seems to be just the opposite. Any advice?