How to make the last five pounds slip off easily ?

This is actually a very individual thing, and if it affects you there's not really a lot you can do about it. To a degree, it depends on how lean you already are, the leaner you are the harder it is because you simply don't have a lot of fat reserves left to get rid of. If you try to push it to maximise scale weight loss chances are you'll lose more lean body mass than you'd like. There is also a psychological factor for some people - diet fatigue setting in.

I'm pretty much smack bang in the middle of my healthy weight range by BMI, not particularly lean (but obviously a bit more muscle than someone the same size who doesn't work out), and I haven't struggled with the last bit this time, nor other times I've lost weight (notwithstanding the final pound, which has been interrupted by hormonal fluid retention then a visiting father - chances are I'm actually at goal and just have some fluid retention from eating out several days in a row!!).

The only way I've lost over 7lb in a day is giving birth.