To be depressed is to be suppressed. Depression thrives in a passive thought process. In this case, it's harder to remember things or have basic ideas come to mind. It feels like a dark fog and it takes a lot just to think of one happy thought. In this situation it's important to make your brain work. Sing to the lyrics and dance a little to the music. Research a passionate topic. Talk outloud about the details of the day. Write a speed story and just write down what your brain throws out. There's a chance you feel no emotional reward for doing things that stimulate the brain to be more mentally active for a while which is okay because these are tips that will help you get those lovely ideas sooner and get your brain back on track faster. Don't worry about fighting decreased brain activity with positivity because in this terrible state positivity might not be correctly processed. Fight this suppression because of self-love and because you are certain you can win the war with depression. Remember your passions even when depression tells you that you don't care anymore. As always, God bless. :)