Depression, whether situational or chronic, is just as frustrating for the person suffering from it as it is for those around them. Those who don't suffer from it don't understand it and they just want their loved ones to stop hurting and be "Happy" again. It's just not that easy. Some meds work, some meds don't. Some work for a while and then stop. Therapy and counseling can be helpful along with medications but each persons treatment is as individual as they are. Most people suffering from depression do so in silence. They feel there is shame in being mentally ill. Sometimes it takes all the strength you can muster just to breathe.
The Huffington Post shared this video and I swear it is the best explanation in the world, especially for those that have loved ones who suffer from depression and don't know how to help them.
http://www.upworthy.com/in-response-...-heard?c=huf1?