Rip to my best friend

Today I said goodbye to my best friend.

She was only 6 years old. When she was 1 year old, her owner abandoned her, and since then she had been living with me.

Twenty days ago, she drank more water than usual, started shaking, and we took her to the vet. She had only one kidney, and it was damaged. We hospitalized her for a week, but it didn't cure it. She came back home and slowly started to eat less and suffer a lot. The only next step was to put her to sleep.

I can't really imagine my life without her. It is so unfair that dogs live less than us humans.

I do not want to get another dog just to survive the grief, but I am wondering how people continue their lives after losing such a beautiful being.