Dear Platinum Heart,
I think you got great advice except the one who is on the Universe!
Nevermind negativity.
Life is full of suffering, sadness, and envy as well as joy, gladness, and greatness but none of these states are permanent. Work on being neutral with your emotions. Do not cling or grasp the things you think will make you happy nor should you feel aversion toward the things you find unhappy.
Right now you are where you need to be. Ask yourself how does my current situation provide me the opportunity to learn and grow.
Your weight is just a number as women we grow subtle and soft. It is a blessing, I could lose 50lbs and i would weigh what I did in my 20's but I am 40 now and weigh 165lbs. but it would not change who I am.
Motivation has to come from within.
Whatever you like to eat you can make it healthy. If you can walk around the block or go to the park do it. Your purpose is the experience of life.