I understand you battle compleately hun,
i always start off really well, excited and eager to get cracking, putting my all into it ect.
Then a couple of months down the line, the excitement turns to becoming a chore, i get bored of doing the same things chasing meal ideas so i dont get bored with the same foods and before long i slip back to my old nasty habits again.
I will be attempting this again hopefully by the end of the month, once i have got my meal ideas planned and an idea of what exercises il be participating in.
I love my wii fit, wii fit plus and wii dance, they are big favourites, but i have some areobic work out videos i bought last march that i havent tried yet for one reason or another so at least i have some new things to try.
On the days im feeling lazy or unenthusiastic il go on my machine, 3 minutes every other day, thats all it takes, il keep you posted a soon as i get started hun, maybe we can spur each other on :D