If middle age has taught Jen Brister anything, it’s that optimism does not come naturally to her. In fact it’s fair to say that her cup is very much half empty and she’s making no attempt to fill it. Can Jen work against her natural instincts and finally see the light? Or will she stay the same old pessimistic naysayer she’s always been. I mean, I think we know the answer to that, but let’s try and be optimistic.

• Comedy