One bible passage I like to quote to myself when I am going through difficult times for any reason, be it worrying about my family, my health, our society etc – we could spend our whole life worrying about many things! – is:
1 Corinthians 10:13
….You can trust God not to let you be tried beyond your strength, and with any trial he will give you a way out of it and the strength to bear it.
It is good to know that no matter what we go through, it will never be more than we can bear as we can trust God to help us with these trials. I don’t think being a christian protects us from anything bad happening and sometimes that is hard to understand. Our lives are mixed up with others and we all have free will. What others do can hurt us and also what we do ourselves can affect our lives, our health, our wellbeing.
I always take comfort in the fact I am not going through anything alone. I like the poem about the footprints in the sand as the best expression of God’s love for us:

God bless you and help you to seek his comforting presence in all you go through,