daily negative dream----hard

I v been practised zhan zhuang and a few other styles lately, feel much better, more happy and more confident
There is a problem i still need help, though.
Each day i still sleep with dreams, they r long and in detail and negative dreams. I v been in this way for several years since i was diagnosed as PTSD. The dreams started as storms and horrible lives to wake me up , down to the years, it is getting progress but they r still here, refuse to leave totally.
Last night, i tried to imagine a happy scene before i lay down ,and even during the sleep , i still kept the image, then i woke up very early this morning.

It seems to be a fight----the negative and night mare old nerve is not letting the new happy nerve to come. If i lay down as usual in a negative emotion and nerve i can get around 8 hours sleep but the brain is heavy. Today i only get 5 hours sleep and i wake up in fear but the brain is happier.

I hope to find a method to stop those negative dreams and the deep fear, they make me in anxiety and fear in the day time, too.
I thought it is a spiritual reason so i asked a few friends , they said it was stll a physical reason .
So, i shall keep on the meditation or r there other faster ways to stop those dreams or change the negative into happy dreams?

Thanks a lot.

 

Look up PSTEC. I think it may be just the ticket you need.