Slinko,
Hi and welcome to our thread and I'll try to be as consice as possible with my answer. I have had great success with WW and I too felt that I would never be a healthy weight. Weight Watchers does teach us how to eat, but there is something called "Tools for Living" and these tools are there for us to see what might motivate us to overeat.
Personally I am a stress eater (I am also an undergrad), when studying last year I would run to the baked goods and eat and eat and eat. I had to basically teach myself that eating the banana bread or whatever would not replace the stress in my life, the stress would still be there. My own obesity was more of just terrible eating habits and having my world centre around food (eating when I was happy, stressed, ticked off, when the sun was shining, when the rain was falling, you get the picture)
Some people do need to see councellors or psychologists while doing WW at the same time, there is nothing wrong with that at all, sometimes the underlying issues may be too much for some to deal with on their own. WW is a great tool though for helping to get the eating right while dealing with the other issues.
Now, I really know nothing about OA or any of the other anonymous programs (other than they have 12 steps). Perhaps OA and WW could be complimentary to each other. WW tells you what to eat (of course with freedom of the points system) and tries to teach you how to eat as well, OA can help some with the underlying issues, but I too have heard that OA is very intense, but for some that is the right thing to do.
I have found Weight Watchers a great tool for my own weight loss journey, but I also discovered so much about myself through my own journey, I am outgoing, bubbly and confident, not because I am thin now, but because I love and respect myself
I hope this has added a perspective, I welcome others to contribute as well.
Take Care!
Ali