I know how you feel a few months ago I got a job and my family was so happy but after about 2 weeks I broke down during my shift, thats how bad it was for me. I ended up quitting. I felt just as worthless. But I eventually got passed it. and I am sure you will too. Just keep trying and dont let your hardships make you quit. Some days will be good for you and others not so good, just take it a day at a time.