Try to focus on the things you can do and not think so much on what you cannot.
Staying positive might seem hard to do but it is not. Stop thinking about what is wrong.
Write up a daily to do list and things you need to get organized on.
Go room to room and do a major make over. Get boxes and donate what you know you will never use or haven't found a reason to use.
The kitchen is a major part in the home and it should be tidy and only have the foods and pans ect that you actually will use.
The less you have to dust or store the more time you will have to yourself and have fun. Update the rooms with bright happy colors and bring your place back to life.
Set up dates with old or new friends alone or as a group. Get out there and do something fun and if your friend is working out or would like a partner maybe think about getting together on a regular basis and give each other support.
You know if you walk about 3-6 miles you will see your weight shedding off. If you have a pet this is good for both of you also.
Set up your snacks and your meals ahead of time. Freeze them or put in your rubber maid containers. Then you can grab your snack and meals for the day and put them in a lunch pale and grab your water. Everything is thought and planned out and you can walk away feeling good that you are really trying to make a difference. The more you do it the easier it will get.
I wish you the best and keep your head up stay focused and confident. You are worth it!!!