Why am i like this?

I keep getting this very strange anxiety every day before I go to work. I feel like I’m going to lose my relationship due to my girlfriend being very tired of my poor work ethic (this was mainly last year) and I’ll also lose my job if I let this anxiety get to me (I haven’t had the best past with work and I’m only 19). I just started working again after a 7 month hiatus of staying home and not doing much, and while I am capable of performing my tasks at work in a timely manner, I somehow find myself struggling with these feelings (I’ve cried various times and I don’t know of anything that gets rid of this).

I don’t feel like there’s really any way to tone it down because it keeps coming no matter how positive of a mindset I have. I want to succeed and I want to get to where I dream of being. I’m also fairly good at my job and I don’t see myself getting fired anytime soon. However this anxiety still hovers over me and I can’t seem to control it. Any suggestions?