Hi, Try to not obsess/dwell on paranoid or upsetting thoughts. If you are really struggling see a therapist. I used to smoke a lot of weed.... Like a lot, people never really seem to get what I mean by a lot... A LOT. LOL. But anyway I loved it heaps but then one day I started to feel weird, at first I ignored nd hid how I felt but got worse and worse, turned to agoraphobia and anxieties and all sorts of messed up sht. (Though I was mixing it with alcohol, anti-depressants- particualrly zoloft and other drugs.) I ended up quitting cos of that.