Some quotes my German instructor has posted to our online classroom:
"It doesn't matter how slow you go as long as you don't stop."
"A little progress each day adds up to big results."
"Mistakes are proof that you're trying."
"Do not let the behavior of others destroy your inner peace."
"Not all storms come to disrupt your life, some come to clear your path."
I understand that stress is rough; I'm dealing with a lot now, too. Make sure you're taking some time for yourself and I hope things get better soon.