Depression itself becomes alright.

I'm taking meds for depression for 5 years and only 80% alright. I have been to 3 psychiatrists and psychologists. I thought of consulting new psychiatrists. I consulted two psychiatrists. They told me that depression becomes alright on it's own in 1 year, u are having dysthymia. Does that mean that a person who doesn't become alright becomes dysthymic?? It's chronic mild depression, he said.What is treatment resistant depression then?. I myself know many patients who have not recovered after years of treatment. Are they dysthymic now?What logic is this? I have been consulting many psychiatrists online, everyone just tell me something new. It's a request plz tell me what percentage of patients with suicidal depression become alright acc. to practice and research. Plz. I will live my life on it's own but atleast tell me it's possible or not to completely recover??