ANXIETY

I am very frustrated; my doctor says that I am better enough to go to work, but I have anxiety so bad that it feels like I cant even breathe properly at times. I have a sore chest & throat often, and I feel like I will cry a lot of the time or I  DO cry a lot of the time, for no specific identifiable reason. It really sucks because I cant even focus on what someone is saying to me a lot of the time, and I don't know what they just said,..it makes me feel like such a loser, and I can barely get motivated to do anything and I am tired most of the time, and it makes me feel so useless. I lose my phone daily and I usually several times a week forget what I am supposed to be doing. I keep trying, but I don't even want to go out in public hardly ever because I think that I will start crying. I feel like whenever I force myself to perform a task that it sucks the life-force energy out of my being, and I just want to curl up & cry; it is so embarrassing that I don't want to go anywhere where there are people. And I don't believe that anyone cares and that I am a waste of their time because I am so dreary with my sadness and uselessness.  This useless/pitiful state makes me feel really angry, like I want to scream at the top of my lungs and kick and punch at the walls, but I don't because obviously; that would just make everything even worse ):