Drink plenty of fluids the day before. Fluids will make your veins distend and it will make it easier for the nurse to access the vein. I always take work or puzzles to do during the infusion. If I'm concentrating on something else, I don't focus on the infusion.

Meditate on the practice of epigenetics that is a way to manipulate the gene coding of your DNA by the proteins you consume.

Make a game out of time it takes to complete the infusion.

im 57 and hate getting my port access but the place i go is very caring and i found a nice warm blanket before getting access helps calm me even on a 80 degree day

Hydrate! use relaxation music for calming while preparing and during Infusion. Try to have a quiet place by asking extra family members to leave the area for 30 minutes.
If you are cold try warm compress to bring vein into visual.