Can you feel the beat of my life?

its been 3 days since i started this subway diet and i’m starting to feel some bad changes. Its like i’ve become emotionally weaker. When someone else is talking to the same person as me and i don’t get a reply, it makes me feel sick. Am i not special enough? Am i not interesting? Does the other person talk better than me? Am i boring? Am i not worth the time replying to? Have i become someone who needs assurance?
This is what i’m feeling now and its not very nice. I know that it might just be that i have too much time to think about all this or it could be my brain playing tricks on me. I’ll leave it a few days and see how it goes. But i do know that now i need something more than guts and determination.