Cutting out flour, sugar, meat?

Okay.. I'm 18 and about 30 pounds overweight and I really really want to get in shape. I've been attempting diets off and on for a while but I never really stick with it. I always cave in when my mom buys icecream or when I have to go out to eat for a "family dinner". My problem is also that I tend to raid the fridge for sweets when I'm home alone, and snack on junk food. I actually don't really binge as much on fatty food (I haven't eaten fries in ages so now they disgust me) but I eat way too much sugary things like cookies, icecream. So I really want to eat healthier, cut out junkfood and processed sh*t.. and I was wondering if I'd lose weight if I went vegetarian or vegan? Well actually, it's not so much about losing weight; I really want to get healthier overall and I have some vegetarian friends and one ex-vegan friend who says she felt so much better/healthier when she was vegan. Also, I think animals are just swell.. and I'm kind of getting into the whole animal rights stuff after watching some videos about animal farms and abused hens and whatnot. I don't really eat red meat anyways, and although I do like chicken and turkey I could probably live without it. I do like eggs for breakfast but sometimes when I'm in the process of cooking them and the yolks are all raw and slimy looking it freaks me out, so I guess I'd be better off not eating eggs either. And I don't drink whole/real milk these days already; I love almond milk. But actually, I never really thought of it, but I probably eat stuff that has milk and eggs in it all the time (like icecream and processed food) so mainly that's what I want to cut out. Wait, I remember my original question! What exactly can I eat if I cut out meat, dairy, eggs, processed food, processed white flour (which apparently, NEWS FLASH!, has no real nutritionally value) and processed sugar? Can someone give me just a list of basic staples.. things that a vegan-ish person can eat? I know it's basically fruits, vegetables, grains and legumes, but is there like a list of okay things?