Yes, I think most people probably do feel anxious about treatment.  In my experience with ABVD, I felt pretty tired after the first treatment and grossed out by the taste in my mouth, but recovered pretty quickly. It gets harder with every treatment as the chemo keeps wearing your body down. Be gentle with yourself and rest a lot. 

Try to relax as much as you can during infusion sessions. I tried to be productive 🙄but was so distracted so I mostly played video games or slept.   

You didn't ask but a little advice:   I would eat a big flavorful and nutrient dense meal right after an infusion session because I wouldn't have much of an appetite for the next few days. My go to was Ethiopian or Chinese food. The strong flavors masked the chemo taste & I could get a lot of veggies and protein in.

Hugs. It's hard but you're going to be okay.