What do you do when you can't talk to anyone about your startup problem(s)?

If you are a startup founder (probably especially the CEO), have you ever felt really alone with your problem(s), like you can't talk to anyone about it? Not the team, advisors, investors and not a friend/family member who knows nothing about startups.

What do you end up doing when this happens? Do you just make a decision on your own, or eventually go with a lesser evil and talk to someone to get some objective input?