Psychiatry Advice

I feeling like I have been struggling with addiction, depression, and anxiety for the last few years and it only seems to be getting worse. I have been going to therapy and it helps me get thru certain days or weeks but never anything long term. I am considering seeing a psychiatrist but I am just a little afraid mainly because I don't know what to expect. What is different about a psychologist vs psychiatrist. I understand at a basic sense that a psychiatrist can prescribe medication and diagnose you whereas psychologist cannot. Can someone tell me how the general process of seeing a psychiatrist is. Do you talk about emotions and what your going thru in life similar to a psychoglist but they will treat u from a medical standpoint.