Good advice already...
We hear a lot about finding a plan that you CAN stick to. Well, I say combine that with finding/devising a plan that you are WILLING to stick to. To me, the willingness is much more vital.
At some point you have to come to the realization that a change must occur. That you can't go on eating whatever, whenever. So you have to come to terms with that and realize there is some restrictive component to losing weight, getting to a healthy weight and staying there. So you have to want this and you have to be willing to make the changes that are necessary to make it happen.
But the good thing is, I think anyone who's gotten to goal (and those well on their way), that once you get past that initial, temporary discomfort stage or transition period of losing the bad habits and incorporating the new healthy ones that you will realize that it's not so restrictive at all. That it is freeing. That the real restrictiveness, the real deprivation comes from remaining fat. Once you work past the initial tough stage of breaking the bad habits, allowing the good habits to take hold, you will see it's not all that hard. Really.
I would love for you to start by getting excited. Get excited about the changes you are about to implement. Because adhering to a healthy lifestyle is no prison sentence, but a key to freedom that will open up more doors to you than you can possibly imagine, ones you didn't even realize were closed.
I would also start by ridding my home of the junk - you can't eat it if it's not there. It benefits no one. Get rid of the junk it is the only way, but please load it up with tons of lower calorie, healthy DELICIOUS items. Be creative!
I would then make a plan - and stick to that sucker like glue. Plan out each and every meal and snack, leaving nothing to chance. This is too important - you can't wing it. Much easier to stay on plan when you've got one.
Be creative. Make substitutions. Scrounge around the net for healthy recipes and foods.
Also start by knowing that you CAN do this - regardless of your prior history. You 10000% have the ability to lose the weight. We are all capable of it. You don't have to be fat if you don't want to be.
MAke the decision to do this no matter what, once and for all and permanently. But please set yourself up for success. Write down everything you eat - no exceptions and again - get rid of the junk - add in the good stuff and plan your foods ahead of time - taking them with you if need be. Plan, plan and than plan some more
I look forward to hearing of your progress.