I had a dream that there was this creature who had the power to suck the life right out of people and kill them.  She could also breathe new life into people who were alive and make them feel invigorated or renewed.  She was partly human, but not all human, and I remember recognizing her as female in the dream. In the dream, she was about to take the life out of someone. I yelled and pleaded with her to not do it and to give the person fresh life instead. I remember I felt very passionately about it, and that was the only way I was going to convince her, and I did. She looked at me and then changed her mind and gave the person new life instead. This same scene repeated again.
I've been struggling lately with a lot of unhappiness and frustration about different things in my life, so I think it might be a representation of my inner struggle to remain positive, but I wanted to get some thoughts. 
Thanks.