I'm struggling with my mental health especially with the holidays approaching. I can't report it to my leadership. What should I do?

I obviously don't want to say too much, but I am anxious and stressed in work and life and don't feel my leadership cares. I'm unmotivated, not eating, irritable around my kids - I hate who I am right now. I don't think my chain of command will be supportive based on what I've seen with others in similar situations. Other than a chaplain, where can I get confidential help? I really don't want to ruin my career.