Don't think, just do. I once had 100 lbs to lose (and a lot heavier than you) and I am now down 114 pounds. It did not happen overnight. H***, it didn't even happen over an entire year. But, it did happen and it (weight loss) continues to happen. Pick a plan you know you can stick to and proceed to stick to it. As others have recommended, I would also recommend you keep a food diary and limit your calorie intake to 1800-2000/day. And be positive about your weight and your weight loss. No one likes a sad or whiny b****, skinny or fat.