You don't need to make all the decisions the second you walk out the door. Break in down into little pieces. Start doing the easy things first, when you get more confident try the harder ones. Once you get started it is amazing what you can do...
When I am not well I have a really huge "too hard basket" I give myself permission not to deal with the things I have to so I can function as best as I can... They do need to be dealt with but if you can put them off till your feeling better it can help.