Hey, I know the feeling - I put on 1.5 stones with a bout of depression, not really surprising when lunch consisted of a tube of pringles, a packet of oreos and a bottle of red wine (not every day I hasten to add but you get the idea!)
I have found breaking the weight loss down really helpful, so I have a 2lb a week average goal, on the weeks I go over I'm really pleased and the weeks I am under that I even it out with the good weeks. That way I am never that upset with the smaller losses as I am still keeping to my average.
As for a weight loss boost try increasing the superfree on your plate to half rather than a 3rd (or success express which is 2/3 superfree but tough to maintain).