We are here to support you no matter what.
I would make a tiny suggestion - that you dont go from eating "bad" to eating tomatoes and toast. At least not overnight. Your body is going to get very mad at you.
Plus if you plan to exercise (something I put off - save short walks around the farm every day - until I lost the first 20 lbs) you are going to need more protien in your diet as well as good high fiber carbs and yes even some fat. (This is based on experience not just something I read).
But most importantly you need to figure out what you body needs for you to feel good. (Because your body is different than mine and hers and her over there, etc.) And for some that includes a weekly (or more often or less) treat to remind ourselve that there is no point in being healthy and living longer if we cant have a treat periodically.
Dont ever feel guilty for going "off plan" since the best way to have long term results is to strive for "overall" healthyness with a bunch of "reality" tossed in.
Remind yourself that you are not fat, you are just at an unhealthy weight for your personality (meaning you dont feel comfortable) and when you reach the weight that makes you feel good it doesnt matter what the scale says or the tv or anybody else.
I love hiking -and only just recently got into it since I have lost the majority of my weight and am now where I was 7 years ago (my comfort zone) when it started creaping up again. I do want to lose about 15-20 lbs more just because it is the hardest 20 lbs for me to lose (success means being smaller than I was at graduation 18 years ago). Fortunately I have a friend here that goes hiking all the time and so we started backpacking and going on 2 uphill hikes a week. Plus we take the dogs.
Be sure to get pics of your new doggy and share with us.
Anyway - obvioulsy I am the babbler of this group and will always give way more information that anyone asks for. LOL