I just lost the only good thing in my life
Why do you think it is the only good thing in your life.
Nothing else is right and losing it will ruin my life.
I'm sorry you feel that way. It is a good idea to get some counseling to help you if you feel like you lost the only good thing you had.
I don't think I will find any way to live without it.
You can always find a way to move on in life. If you struggle you can seek help from a professional.