Help vs. Safety

One struggle I've been dealing with lately is the boundary between wanting to help someone and wanting to stay physically/emotionally out of harm's way. What I mean is, there has to come a time when you say enough is enough. But when do you say that? I have a hard time thinking I need to "give up" on someone or something because it is causing me undue stress day after day. That is not the way I want to live my life. However, what's the "Christian thing" to do? Simply enough, Jesus would keep pursuing the lost until He saved them. He would always be available to talk to, to get advice from. So, I'm only human. But, aren't I supposed to be more like Christ? What happens when your safety is threatened because you've tried to help someone? What happens if your days are terrible because of this one person who you are trying to reach won't accept anything you're saying-- who won't change their behavior even when you've been a good friend and tried to help them? In my case, I had to distance myself. I had to let someone with more power than me carry that burden. Sure, you always want what's best for that person, but it's no way to live when your mental health and personal safety are at stake. Who knows? Maybe when that person is ready to change their ways, they will find comfort in me again knowing I was as helpful as I could be, yet aware of my own well-being. I think God wants us to try our best, but our safety matters more to Him. If it's God's will, that person will come back and be understanding of my situation. If not, then it just wasn't mean to be...