How do you get over that gross feeling when you wake up for a job you hate in the morning?

Sometimes, I feel so embarrassed walking into my workplace I don’t know why, but this started happening after a year of working. I just feel like I don’t belong here or in any company, really. I’m not supposed to be working at all. Like, what is this? Why am I broke? Why do I do this? Why am I even here? Am I just lazy and irresponsible, or are my feelings actually valid?