One thing with mental health and suffering with it is that it can vary from day to day. One day you could be feeling okay and be able to get on with your day and then another day you could not feel like even doing what you would normally and you end up just hiding away for the day.
I know myself as a sufferer with mental health, I have days where I do tend to shut off for the day and just call it a day that was bad and see how the next day is. Sometimes that is not always one of the better ways to look at things or deal with things but if it helps, you do it to prevent yourself from feeling worse.
Has your mental health ever made you have days where you didn't do something you wanted to?