Never.
I tried it a year ago for a few months, once a week, didn't think much of it and quit.

These days when I'm struggling, I hate admitting I wish I had a T, but then I'd only ever see the person on an as needed basis. It's otherwise way too time consuming for my liking; considering the fact that it would only ever be for 'spilling my guts' purposes.

And when the storm is over the next day, I wonder WTF I was thinking wishing I had a T anyway