My loss so far--pics before after

Hi!!!
I am 1,70 tall (i think that is 5"6) and i was nearlly 100 kg (220lbs)
after having my baby 3 years ago.
i started eating better from May last year and i have managed to drop to 77ish kg (169)
I have loads of photos here are a few.Of course i am not done i want to reach 65 kg (143) and then see from then on how i feel at what weight i will feel great about myself!!!!
I was loosing weight really easy at first but now its sooooo diffficult.I am stuckActually from xmass i gained a couple back and lost again.
I feel i am loosing my motivation.
I run with c25k and also i have started the 30 day shred!I I LOVE bad food and i die for sugar,chocolates,cakes and biscuits!!!
Thing is i was a smoker from 16years old and i am 30 now.I stopped smoking in December and that also was / is really difficult to go along with my diet.So i do blame this aswell for me gaining a bit and then just getting stuck at 77kgs
I have been smoke free from december 8th!~!!!!~~~~!!!but also i am eating more bad stuff from them.It just seems easier to say OK i'll have it.
Wish me luck cause im really needing it!!!!