I feel much the same, if it's any help, but as woofgang says 'you have to do it'.
I found a small, supportive writing group, which helped a lot. Now I've moved back to England I'm wondering about starting one to give myself deadlines and help others like me (and you).
I was helped by (at long last) getting 2 short stories published the other year (in fact one won a prize in a competition so I got paid!!!!) BUT you have to remember that whoever is doing the judging is using a subjective viewpoint. I once submitted something, which was returned with the comment that it was 'the perfect short story' - but they still didn't publish it!
I hardened up a lot when I submitted an illustrated article to a magazine and (on someone's advice) popped a tiny pencil mark inside the paper-clip. When it returned with a polite rejection-slip a few days later, the mark was in the same place. They'd not even read it! So, be of good cheer. A few kind words go a long way and it people think you are quite good then that is huge encouragement.
I do a Christmas story each year for family and friends, they love them and that helps to keep me going. Perhaps you could think of doing the same?