The question is: Are you feeling like you are a danger to yourself or others? If so, perhaps hospitalization should be an option. Why not do that voluntarily? If you are just having thoughts but have not intent or plan, if you aren't ruminating over suicide, if you aren't typically impulsive, I doubt a psychologist would involuntarily commit you. So, if those statements apply, you should be pretty safe discussing what it going on. If they DO apply, you still need to be honest about them. Most still wouldn't jump to involuntary commitment. They would be more likely to suggest hospitalization and ask you to do that for yourself.