The main reason for the loss, is carelessness. Something that hasn't done, something that you did, but haven't needed to do. Something for you don't seem so important, so necessary, that in the end was essential for lose. Losing your job is not so bad than losing a person who one day was all for you. Anyway, losing is never good. Unless you want to. I know it's hard give 100% of your body when your soul doesn't give even 1%. But try, try hard.
Because no one will feel sorry to take what you have when think you don't deserve it more.