i understand u. im also going through it now. what ever the cause is. just be pateint. give ur self some time. i hope this will end soon.
When I am lonely and no work, usually weekends, even I feel sleepy. Either I sleep or I drive around my city, Bengaluru, have some eatery, of possible mingle with strangers and back. That fills my day. Am back with me energy. Check anything similar suites or excites u.
I am sure It must be really exhausting for you, but can you start to focus only on your present, let's not think about the future and try to get engaged in activities around you.