Hey guys!

I most often become lucid in false-awakenings when I'm lying in bed (in the dreamworld). I have this big problem though, where I can't sit up? I become lucid and I look around in my bed... I want to sit up and control my dream but my dream body suddenly feels heavy and I'm scared I won't be able to imagine what my dream room looks like. So then I feel stuck and can't move. Last time I tried to float out of my bed... fail. I know this is caused by my own self-imposed mental block, but does anyone have advice that could help me get past it? This has happened far too many times and I'm desperate!