Welcome to 3FC =)
I want to start off by saying that it is very possible to lose weight. You can do it. It's not always easy, and it's almost never fast, but it IS doable.
Before I say anything else, I should point out that there's a Depression and Weight Issues area on the forum as well as a Chicks in Control section. Both of those places you will be able to chat with others dealing with Depression, effects of different medications, and under Chicks in Control you can see that you aren't the only person who eats emotionally or has secret eating problems.
In order to change something, we have to make a change. I know that sounds a little too simple, but what I mean is at some point we must decide what needs doing, and then do it.
When it comes to weight loss, we aren't aiming to lose weight fast, we're able to take it step by step... making small healthy choices throughout the day that add up to big changes.
If it feels overwhelming, you don't necessarily have to do everything all at once. It is perfectly OK to decide to change a couple of habits for a few weeks, and only after you've gotten used to those things...add in more healthy changes.
You don't like veggies? OK. For now don't worry about it. Instead, simply pick up a notepad and every time you're about to eat something you write down the food and your feelings. The notepad doesn't prevent you from eating whatever food you've decided upon, but over the course of a week or two you might notice some very interesting patterns about when and why you're turning to food, and also WHAT foods you're choosing as well as the amounts.
You can't climb stairs well? OK. For now you simply focus on getting in ANY extra activity. Anything! A five minute walk a day. A few minutes of yoga. Parking further away from stores. Anything that allows you to start moving more than you are now.
Maybe you drink a lot of sodas or sugary things? Switch to diet versions or pure, refreshing water. It's a very simple change. After a couple weeks, most people find that their old sodas or juices are now WAY too sugary for them!
Pick something something you want to change, and come up with a healthy habit to "push out" a bad one. Maybe you even just want to aim for "No More Bathroom Eating!" and tell yourself that any meal you make, you must sit at the table for. Sitting down at the table with nothing to distract you will definitely keep you mindful of the meal, and you won't be trying to hide anything anymore.
We'd love to help encourage you or suggest more. People at 3FC really do want to support and offer understanding to others. We're all working towards the same goal: HEALTHIER!
If nothing else... know you can do this. Because, you can!
I hope to see you around the boards.