Gertrude-- I will tell you from my current experience losing weight is all about mindset. Of course some people have nerves of steal and nothing diverts them from a goal, but for "normal" minded people with toddlers and real life stress if you aren't in the mental capacity for any reason it's just not going to work.
I joined WW in April and from April to August I lost 25 lbs. We had dealt with Michael's car accident and my losing my wisdom teeth around that time but when I had the miscarriage in August I lost it. Now, I'm not sure if I've gained any (as of a few weeks ago) but as of a few weeks ago, I've simply been maintaining the same 25lbs since August. In fact, I keep gaining and losing the same 3-5lbs over and over again. I blame it all on the fact that I'm still not 100% okay mentally and emotionally therefore I just don't give a shit working out. Eating right has stayed intact (for the most part) but working out is the last fricking thing I ever want to do. I keep hoping I'll start wanting to again, but with the weather/season and the fact that I'm just not there emotionally. It doesn't seem possible.
So-- keep your head up and when you are ready, it will happen. In April when I started I decided that enough was enough. I wasn't going to make anymore excuses and I was on a ROLL. I loved how I worked hard for my weight loss and I loved what it was doing for my self-esteem.
Hope that helps a little. Weight loss blows!