I'm so familiar with all those feelings....and I hate them to come back to me, that's why I was avoiding relationship for so long.....
Just try to see if you can force yourself for some fun activities.....do you like to workout? do you like to go to gym or hiking or biking? what about dancing?
I know if you don't feel happy, anywhere you go you will have the same feelings....but there is a magic in exercising....praying is another magic....and breathe....

take care
marjan