Hi,
I can understand what you must be going through. From what you have mentioned, you seem to be suffering from symptoms of depression which is resulting in all your problmes including anxiety, loneliness, negativity.
Depression is a treatable condition. With the help of medications and adequate counseling, you will be able to feel better again.
You should consult a psychiatrist to get yourself completely evaluated and therafter initiate treatment.
Next Steps
Consult a psychiatrist.
Health Tips
Earlier the treatment is started, better is the response. Also, share your feelings and emotions with someone close. Venting out your feelings is important on a regular basis.