Can mood really affect your dream?

I'm really sure about this. Again as usual I am assuming. But I kinda think that to a certain extent your mood before you go to bed really affect your dream. Well at least for me.

Last night I was not really in my bestest mood or in an easy word I was in my most horrible bad mood when I went to sleep. And yeah I had a nightmare. Imagine my hometown was attacked by a group of bad people who freely burned and killed every single person they saw. So I was running and hiding with my friends and family. I even witnessed some of my family members died along the way, but couldn't weep or do anything since I had to continue running. The bad people were so cruel that they continued to chase us who were still alive. I remembered buring my body in the sand and hid my head under the water. It was tragic but it was so scary. Hiding and running in order to continue living. It felt like forever. But thankfully for some reasons that horrible nightmare ended with a happy ending. The bad guys finally disappered. My family members who died earlier were actually alive and people were smiling again.

When I woke up this morning (more like this evening) I was a bit scared and relieved at the same time. Next time I'll make sure I'm not in a bad mood before I go to bed. There is no way I want to have such a horrifying dream again. For some reasons, usually when I smile myself to sleep I would have fun dream, weird but fun and I enjoyed to be in such a dream. So tonight I''l make sure I'll smile or happy before I go to bed.