Why can the smallest things trigger my depression?

When you're depressed, the tiniest things can seem like such a huge momentous thing. You just have to remind yourself, it's okay.

Doctors still don't know a lot about depression or what the cause is so there could be count list of things that may trigger it not matter how "small" it may be.

Small things represent the majority of things we deal with everyday in our lives. As we live and form memories, a lot of the small stuff seems like it gets forgotten, but we very much remember the emotions we have formed around them. The real difference between remembering an emotion and experiencing it again is nebulous. Emotional remembering that triggers depression is more like a black hole. Little things, or daily tasks are like super dense but small parts of our lives. They may seem small but there is a lot of mass in there. A really sentimental memento might even feel heavier in the hand than something that actually weighs more. Depression seems to tip the scale of perception from dense star to black hole, which in the moment feels like an inescapable weight towards which you are inexorably pulled. It can turn doing the laundry into hauling a hundred thousand pounds. The mental strength required to do basic tasks comes to represent survival even more so than the tasks. Let’s all hang in there. The real difference between remembering an emotion and experiencing it again is nebulous. For emotional remembering that triggers depression it is more like a supernova. Small tasks trigger BIG emotions because those big emotions have been drilled in throughout the doings of those tasks