Love this! I get so frustrated with myself when I can't do things - when my brain won't work at the speed I want it to, when sometimes I can't even string a sentence together. I also have to be careful, because I have a tendency of taking the 'get the things done' attitude to an extreme level - when sh** gets tough, instead of resting I often dig in harder (spoiler: it doesn't end well.)
To me, Depression has never really felt like emptiness - fuzziness, sometimes, but not emptiness - it's more like someone is tearing off tiny pieces of your soul with their fingers, one excruciating, paper-thin, strip at a time (which, I know, is v. dramatic) or holding back a boulder that's continually threatening to roll over and crush you - some days the boulder is easy to hold back, and others you have to throw your whole body-weight behind it just to stop it from crushing you. Exhausting.
...Sorry, this turned into an essay in your comments section! Oops! Hope you're doing as well as you can be :)