This first suggestion is just if you don't like chickpeas and lentils as a cooked product.
Salads are very hard to burn :P
I get a tin of chickpeas and a tin of lentils, mix them together with some dice capsicum, quarter to half of a red onion (depending on it's size and how much you like onion :P) and then find a nice dressing to put on top.
RINSE THE CHICKPEAS AND LENTILS FIRST. I found they helps cut down on the amount of farting :P
You don't 'need' the dressing, sometimes it can all taste quite nice without it, but I always find it stops it from being too boring.
This is a pretty 'sweet' tasting dressing-
But this site has a whole range of different dressings, depending on what you like (I prefer more salty flavours)-
If you really do just want to stay away from chickpeas/lentils, you could try making pizzas.
I know,you say you're not good at cooking, but you're going to get better at it. If you can find mini bases at the store, and a tomato sauce (sometimes they come in little tubs). Then fill up those pizzas with pine nuts, capsicum, olives, onion, whatever you like! They don't take long to cook. Be sure to set a timer, if you think you'll forget.
Burritoes are also pretty easy to make and you can fill them with just about anything.
If you feel up to it, tofu can be incredibly easy to cook. I use a firm tofu from the Blue Lotus brand. I gather from some of you other posts that you might be in the U.K? Maybe some of our board members from there can recommend an easy to cook tofu brand. Especially if there's one that's already flavoured.
Now look, I was a TERRIBLE cook when I first went veg. But tofu is pretty simple. You can chop it into smaller portions. Put some oil in a pan and then throw the tofu in. It's up to you as to how much you want to cook it, but my method is to just keep moving it around the pan with a spatula or something like that and I test it with a fork. When it's all the way warm through, it's cooked (sometimes I get a bit trickier with it, but for a beginner, that's all you really need to do)
Once you've done that, you can put it on wraps, with avocado and....whatever else you have around.
If you don't want to have tofu, maybe something like black beans would be nice? I know you've said you don't like beans. But just incase :P
Hope of those suggestions help you out a bit. Don't feel disheartened by a few problems in the kitchen. It's part of learning.
Aside from that, I think it's really important that you speak with someone if you're not already. You know you have a problem, but it's okay to ask for help from a professional.