WE all went through periods of dissatisfaction. I have found through the years that one of 3 things will happen.
1. (least likely) With time you'll feel more comfortable..However from the sounds of your post, after 7 months I don't think that is going to happen with this particular position.
2. (more likely) If you stay you will become so frustrated and dissatisfied that you'll chuck it all. Not a good move so soon in your career, You worked hard to get where you are, don't loose it all with out trying something else in nursing.
3. (best option in my opinion) Look into something different within the field of nursing.. Now please understand that I'm an ER nurse through in through so my views are not objective. In saying that I would suggest you consider ER. Your Psyc. backround gives you an excellent advantage as a large number of patients we see have underlying psyc. problems. There is little time to get into a rut and there is always something new and different behind the next door. If that doesn't appeal to you you might want to look into outpatient psyc.
Best of luck in what ever you try. By-the-way all the way through nursing school
I was sure I wanted to do Psyc. nursing. As there were no positions available at the time I found my way into ER, and have lived there ever since. During school, I would have never considered ER.
The biggest thing you need to remember is to take care of yourself. If you are unhappy and frustrated you can't give you patients the care they deserve no matter how good of a nurse you are.