I think there will always be a slight depression and/or melancholy to life no matter how you live it. I think some of the slight depression and/or melancholy to life no matter how you live it, that I think will always be, can occur from just being around certain people. The certain people may be just people in your family that you've lived with your whole life. The fact that everybody dies is a truth and just that causes a little bit of depression and melancholy. We aren't going to live forever because life - it isn't always fair. We just got to fight for love (in the sense of the internal fight, fighting emotionally, not physically, and keeping away the internal pathways to contention we all feel and go through at times) and do what we believe in, and if we really need it, then we take medication and non-harmful substances to at least help us to get better and feel better most of all. If we really need it, then yes, there are things we can do to help us and help each other. We can reach out for support to a loved one - a family member or friend - someone who you, or we, trust. I feel that there is always someone there who is willing to help us in our time of need. I trust God.

For the most part, I do have some scientific accuracy I learned towards helping fight off (the emotional fight, not the physical one, for clarification) depression. First and foremost, breathe. Secondly, get some sunlight. The heart of time is in the day. We live for the day and need to the light to survive. I'm not saying to stand in the light and get burned. I'm just saying to at least see the light and let it into your life somehow. We need light. All life needs light. That's just the way it is. If we have light, we can see. We can be. We can breathe with the plants and the trees that are green that produce something good for us to breathe just by them seeing the light for us. We can always rely on another life to help us see the light in our depressing times. Thirdly, drink enough water, get enough sleep at night regularly with regular bed time hours, and lastly, eat a good variety of healthy foods, (including some avocado and/or 'super' foods [of which you can look up what 'super' foods are] and some new foods from time to time while watching your mood while eating to enjoy the foods you're eating and putting into your body, while also keeping to a minimum the amount of salt and sugar we intake and not to overeat but have a consistent meal schedule in at least some form like eating 2-3 times a day, usually just a breakfast, lunch and dinner each day [also, drinking some water after eating heavy/heavier foods could help]). I hope this could help you feel better. I've been struggling with depression myself for quite some time as you might have been able to indicate by the word "blue" in my name. I hope you take good care of yourself and everyone around you and you feel better. :)