I don't think we're meant to live in fear of losing our salvation. That doesn't mean we should assume the evangelical posture of "once saved always saved" either. For me, I simply trust in the Lord to do what is right. I recognize that He created me, died for me, accepts me and loves me infiinitely more than I love Him. He is not looking to damn me because I may have failed to do such and such. Could I be lost? He alone knows this. So, I live by confessing my sin, communing of His Body and Blood as frequently as possible and "working out my salvation" to the best of my ability but aware that I fall flat on my face every day. I just get up, dust myself off and keep on keeping on. But I don't live in mortal fear that He's waiting for me to slip up.
I'm a father. I know my children (who are all married now) messed up every day. I wasn't looking for opportunities to kick them out of the family, as it were. Some times I had to punish them... more often than that we had our heart-to-heart conversations, particularly when they came to me and admitted they'd done such and such. He will do what is right in His eyes and I trust in His love for each and every one of us.