I think if you think of this as a personal journey and don't compare to anyone around you it will be easier. Believe me I have been there. I was about 150lbs most of my life and now bigger than I have ever been. Depression, anxiety, PMDD, giving up smoking and binging has contributed.
The mind is a poweful thing and it can really be your enemy too. If you don't lose weight with the correct mentality then the actual problem never gets solved.
Using a journal to track your thoughts, feelings and to go back from when you were little to find the triggers will help. Once you find out how and why you got to where you are then you can start to make better choices for you.