Sinking, yes, i have had such depression i felt like i was being pulled into a black hole that kept spiraling downhill, bottomless. I lost a dear friend and it lasted for about 4 months straight. Then one night before bed I prayed God please help me, lift the pain of the loss. I had a vision that night of my friend who died. She was aglow in white and in the middle of a room of friends. I turned to tell them she was alive not dead and i turned back and she was gone. I went to wake up but i could not, the room was bright light like the sun. And a peace filled my heart and i felt weightless. I knew she was in Paradise in peace. The next morning the depression lifted to never return. It was a miracle and i thanked the Father for it. I only know that for me a heart felt prayer worked, it was heard. The person i lost was my spiritual mother. I have since recovered and it still lingers the dream or open vision that i had. I hope this helps you. blessings and tc