malachi,Welcome to HealingWell. Why do you think you are doing poorly at your current job ? Have you talk with your supervisor to receive some feed-back on how you are doing and what you can do to improve ? Sometimes our anxiety fools us into thinking we are not doing well and then our anxiety spikes.
Your bad credit history should not be a reason for you to be let go from your current job. Big breath and know this is anxiety making you feel so awful - do something to take your mind off of worrying - something relaxing. Reading, take a walk, listen to music or whatever you choose.
Life is full of challenges. Sometimes situations are beyond our control, and sometimes we create challenges by our own hands. It isn't always easy to face them alone. Sometimes we just need somebody to understand us. Sometimes we just need a friend. You will find many members here that will support you so keep on talking with us.