God, please show me grace and mercy.

I need healing from depression. My Mom has recently passed away. She was in a home for 2 years.I didn’t realize how her circumstance were wearing me down. I have let my work fall behind at our business. My brother has been doing drugs ( I just found this out) My blood pressure is high. I need some miracles. God said to ask, believe, and we shall receive. Please help me. I am feeling so unworthy right now.