Maybe you are anxious about being put in charge and having other people depend on you. Maybe it's something you need to do but you don't want to do it.
On some things I can relate. We all have those moments when we have to get something done but we really don't want to.
Maybe you've been working too hard and you just don't want to do anything anymore. Take a break a Weekend off or something then go back to work and see what happens.
Hope this helped