Re: should I work?
Hello and welcome...
It sounds as if you need some medical attention to help you get to the bottom of this. The experiences you describe do seem to fit into the bipolar model, but a good diagnosis and treatment from a qualified doctor is what you should concentrate on first. Meanwhile it may be to your benefit to seek some medical leave to get the time you need to find out. No sense in losing your job due to medical reasons without need. You may need a period of disability to get yourself evened out.
Now the shoplifting you describe has got to stop. You need to protect yourself at all costs from legal trouble, as it will be costly to you and many ways. You must cut yourself off from your negative influence, as it is only a matter of time until you get caught. This type of behavior is common in the mania phase of bipolar disorder, and can lead to great harm.
Use every minute you have to get yourself some help. There are successful treatments available, but you will need to comply with the doctors to find just the right combination that is right for you. Get help before things get any worse, as help is out there, and you deserve the best life you can get.
In the meantime, do look into a medical leave, or temporary disability so you do not have to experience the worsening panic attacks, or the other disruptions at work. Do you have a friend or family member who understands what you are going through?
Please let us know how you are doing, we have lots of experience here in helping others.