I also have a hard time motivating myself to go outside--particularly since I became unemployed. However, what I ended up doing is cultivating a habit of going out everyday around 3pm to run errands - whether it's post office, grocery store or going to the bank. There is always some little thing I need to do. Once I got into this habit, it because routine to get myself dressed and ready by 3, so I could go out and do my stuff.