I agree with everyone else on this one. I, too, think that at 6' 3" and your weight, I would not look at you as obese. But, as said before, this weight loss thing is tough. It gets to everyone! That little inner voice of doubt hits everyone at different times. I guess it is now YOUR time! Darn.
You've done so well, we're all in awe of your progress! I hope you can find it in yourself to be in awe of yourself!

You are such an Inspiration to us All!
Keep Up the Great Work! You don't look obese. Have you taken your measurements or tried on some new clothes? Sometimes we see the weight loss in measurements or clothing size. The scale can be a beast sometime. 
That's amazing!!! You're doing GREAT! Don't lose hope.

Congrats on your weight loss accomplishments!!