It's really hard. Two things that have helped me a lot 1) speaking with a counselor who specializes in helping cancer patients deal with their emotions and the logistics of their treatment, etc. I am very lucky the Columbia Presbyterian Hospital in NYC (where I am being treated) has a program/protocol/trial that is free to people in treatment. Ask your oncologist if s/he knows of anyone in your area that can help.
2) I ask my oncologist for a Pharma referral to see what drugs might be able to help me cope with my anxiety, anger, etc, as they were real effecting my day to day life. He gave a doctor who sees cancer patients exclusively. He knows how and what drugs we take can effect our mood in addition to the emotional stress of the situation, not to mention drug interaction. For example I had been taking between 25 mcg and 50 mcg of xanax up to three times a day as needed. I was put on a schedule 50 mcg in the morning and at night and 25mcg at midday. I was also put on lexapro, and give a very low level non addictive sleeping pill to take as needed (I use it for 3-4 days after my infusion to counteract the steroids).
I am feeling much more in control of my life right now then I was in October
Good luck and remember we are here for you if only as an ear to listen.