Hi new to group ... 59lb to lose ... Can't do it on my own

Hi I want to lose 59lbs before I turn 40 next year. I lost in 2009 4.5 stone but failed to maintain as I got complacent. I now need to be kept motivated and could really use some support from others that understand what I'm going through/feeling ?

Why is it so easy to put on and so bloody hard to lose ?????