Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.
I however am going to succeeded in my plan
People who think that a certain way of thinking is all that's required for things to go well are quite naive, and I'm not sure they can be reasoned with, so it might be best to avoid some of them if possible unless you're certain that they're correct.
I personally have not had success with medication (other than a bit less pain), but I'd recommend seeing if you can get an anti-depressant instead if you haven't already and see if it works. If that won't help or isn't possible, it'd probably be best to join a group of some sort like on the meetup website or campus. I'm personally thinking about joining a skeptics/atheist group soon. You could try that if you're a nonbeliever, or if you're religious, maybe a religious group is worth a try. Sometimes there are local groups for people dealing with depression and other psychological disorders, too or you can just join a hobby group if none of that is needed. Perhaps something with politics since you are bothered by the way society is structured. I'm not sure what you enjoy, and I know it's painful when people aren't supportive and tell you it can't be done, but you should at least do some of that for fun if not for a job.