I am not saying it is or isn't possible, but rather what I will say is that I personally think it is more unlikely that your possessed by anything other than your own need for acknowledgement and need to be heard or listened to. However if that's what you need to believe to feel happy then how delightful and good for you. I am not exactly sure what kind of response you are expecting from people but I hope they are just as civil and polite as mine. Others might not give you that courtesy or even indulge at all.
In my thoughts maybe it is a psychological effect rather than a "spirit." I am saying that it is unlikely but possible that it would happen. Usually spirits don't possess people to give them any material or useless wealth but to aid them in a more "Inner" level. I just believe that the spirit you might have thought was a spirit was a need or a want for money. It is possible and more likely.