I enjoy cooking lots of things, but from a therapy perspective, it has to be risotto - it is the fact it requires my undivided attention, stirring, stirring, stirring, and then you are rewarded with a big old bowl of cheesy carbs

The fact it is done with a glass of wine in hand more often than not, is a bonus.
The 'how' I cook is important too - if it is night, I hate having the main lights on in the kitchen, so I have a few under the cabinet lights, and votive candles. I also have a radio / CD player with 'interesting' music - my go to cooking CD is Enrique Inglasias! I blame an old friend who had that, and a few similar CDs in her kitchen, where we spent an awful lot of time together, and it brings back fond memories.