@Marketta Life with chemo IS doable. Most everyone here will testify to that. I have four kids and I have continued to adjudicate fights, administer panadol, solve 'I'm hungry' and decide who's faking illness to get out of school on a daily basis...!
I have struggled emotionally & mentally a great deal, and continue to do so. We are not just body parts that can be separated from our minds, especially with such an intimate part of our femininity. How are your support services? Have you got a Breast Care nurse that you like? Mine is wonderful and I always feel better after talking to her. I asked my oncologist for a recommendation to a counsellor and got a good one, community funded, so it doesn't cost much. Your GP is a good resource too. Just tell them you are struggling emotionally and would like to do domething about it. There are support groups, and the BCNA helpline 1800 500 258 is great. Don't suffer in silence, reach out.
You can do this! Rolling with the punches is hard at first. And things will forever be different, you will be different (and boy, do I struggle with this). But we humans are adaptable creatures. You'll get there.