Not new but back again ( Lack of willpoweritis! )

Hi just looking to add a few friends who are happy to kick my bum when i'm slacking and give me a bit of a helping hand!
I started on here last year and slowly but surely after multiple attempts managed to lose around a stone, since then the diet went on hold, i've been on holiday and gained about 8 pounds back and i feel rubbish!
I find it really difficult juggling a full time job, a 3 year old and fitting in exercise. (When i get a spare hour or so i'm either cleaning, or sleeping lol )
I'd be grateful for any tips or advice and also to hear some success stories to spur me on again!

Hoping this will be my last attempt :)