any moment now ...

I am in a weird place at the moment. Its kinda like this: (part of my brain): "Any moment now, my facade of happiness will crack, and I'll tumble into a depression ..... any moment now .... I'm braced, I'm ready, bring on the sad .... any time now ... (taps a foot ) ... yeah, it will sure will be awful .... when that big downer hits .... any time now ..."

and on and on like that ...