Close friend is having sex for money

You should express your love and concern for her, carefully and consistently.

Tell her: "I'm so worried about you. I wish you would get help to make different choices." She might be struggling with addiction issues; if so, she has a challenging road ahead.

Sadly, you cannot save her; you can only support healthy choices while keeping your distance from the rest. It can be extremely challenging to detach from a loved one's choices while still caring about her.

However, you need to realize that this burden -- being honest, kind and loving while not becoming overly involved -- is one you are strong enough to handle.

You are absolutely correct that your first responsibility is to yourself. You must get and keep your own life together. That will be your best and most important gift to others.