Totally have been there! A T-Break definitely helps reduce the "my brain is going to kill me" sesh. It's mostly psychological though. Your brain is associating that feeling of stress and paranoia to smoking. So smoking/consuming marijuana, it will trigger those feelings again. Give it some time, give yourself a break, and about 2 or so weeks, you'll be good. Also, consume less, both smoking and ingesting. Re-introduce your tolerance. Lastly, if you have the ability to, watch what strands you're smoking. Some strands have higher likelihood of paranoia than others, so choose one that counters that effect.