Factory environment, need ear plugs, and music headphones are not an acceptable substitute, sadly. Music after work is a good thing to keep in mind.

Being away from work does help, and the frustration usually disipates fairly quickly after work, but not so helpful if there are multiple hours left on the shift -.- Usually I just try to think calm thoughts (not super helpful). There is also a fair bit of swearing that happens, cause there usually aren't other people around. Today I shredding paper; it helped a bit. Mostly I'm just glad to be done though.