I'm starting in a similar place size-wise. I'm confident I can get to my goal weight. It's going to be hard work for months (and probably years) but I have no doubt that it can be done. I have no doubt that you can do it too. 
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Kate
Start: 27yo, 300lbs, inactive
Goal: 30yo, 120lbs, triathlete
Training for my first run. 8k in November
0-1-2-3-4-5-6-7-8
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