There is one word that describes the feeling of not caring about anything. It's "anhedonia." Even if you haven't heard of it, you can learn about it fast--AND get a plan to help you start caring again.
When I was suffering from depression years ago, I thought I had to pretend to be happy to get through it. I thought I had to let everyone know that I was OK, that nothing was wrong with me. But it made it much worse. Here's why.
When it comes to talking about mental health issues online, why don't more people talk about depression? A huge percentage of the population deals with it, so why is it not more common? This might be why.
When you're feeling depressed and you're at your lowest point, it can be almost impossible to escape your confining vocabulary. But it can help. This is why it's worth a try. Here are other words for "depressed."