I have just seen this thread. I too lost the only daughter that I will ever have in this world a long time ago in 1984, she was only about a year and a half old, just learning how to talk and being active. She was a heart disease patient, very serious condition.
When she passed, due to surgery that she never returned from, I was devastated. I thought my whole world and every purpose I ever had was now gone. I said to myself, I am her father, I let her down. I slipped into a vast depression. I saw no purpose in going to work because it was a "serve the people" job. How could I do that? I could not solve my own pain. I was in a complete fog for over 18 months. I intended to do things, but I could not remember. Simple things like shaving or forgetting equipment for work that was necessary. Fortunately I had understanding people at work, who let me have time to get back into shape.
I tell you now, this is the turning point for you. Your pain will never leave you but you do have a chance. Use this event to come closer to God, to your remaining loved ones, and be of one word "Be..Kind". Become that person who has a sword through their heart, and sees the pain that others don't notice in people, and treat them with kindness. Soon, you will be able to cope with life again, it will take time and the memories will flood back every now and then and you will get down, but you will have a gift that others can't understand. You will know the pain and suffering of the human race, because you suddenly realize what is really important. Those who you deal with on that one to one basis will see the care that is in you and will know you are for real. Ask God to help you to understand. He revealed this path to me. Love is what is lacking in this world most of all. You now know it to be true, because when it is taken away, a void is all that seems to be left. Brother, Sister, who ever you are, I love and pray for you at this moment. God bless you!