what is the best thing one can do to overcome depression?especially the kind that you get when in a relationship.

A sure fire help when dealing with depression is just simply being around another person, whether that be your significant other or a good friend.  You don't really have to talk about anything, though it helps, being around a person that genuinly cares about how you feel and think grants a lot of reprieve to your mind.  There is a lake near where I live, so whenever I start feeling down about myself and life I usually grab my favorite music and just sit next to the water for hours on end.  But, that's just me...

I find one of the best things to do is talk it out. If someone will listen, tell them. Never ever hold it inside, at some point it will get too much to bear mentally. Also, it is no shameful thing just to cry. sometimes all your body needs is a release. I have extreme depression, have been through every step and medication. I find giving myself time to cry, talking about it, or sometimes just surrounding myself with loved ones having fun can help you through it. Even just letting it out on something like this, doesn't have to be detailed, can help. You might get an answer back and that shows that someone does care even if you don't know them. Also, God can get you through anything if you let him and give everything to him. Sometimes i understand that is a hard thing to do and trust but i find when there is no hope sometimes, my prayers always seem to get answered somehow and someway. If you ever want to talk or let things out, i would be glad to help in any way i can, even if its just someone who will listen. Get feeling better and good luck.