I am doing ok,but still had some symptoms still

After being well on mirtazapine on November 2013,and it’s effect started since February 2014,it’s now almost reaching May 2014,at the start of February i was doing on top form until maybe start of April the effect is reduced a little

Now I still had anxious symptoms and I think also some psychosis,like I feel danger like people would hurt me verbally or they dislike me,but mood wise I am better like I don’t get depress(getting depress is he worst feel)

I wonder will mirtazapine poop out as in will the effect go away?i am quite worried,and is there anything I can do about scared of being hurt verbally or people dislike me?will benzo help or should I add some other meds?