Nope, doesn't sound stupid at all. It's a common feeling that I see expressed around here. Thing is, we 'know' that society judges us on our weight, and we start taking that on, feeling negative about ourselves then perceiving those thoughts in others - even if they're not there.
If making concrete goals discourages you if you can't meet them, maybe try to be a bit vaguer. Rather than "I will lose X amount of weight by X date" try something like "I will try and increase my exercise and eat less junk". That way you can appreciate the small successes, which is very important in the beginning. Or perhaps make a road map breaking your goals down into ever smaller chunks so that "I will lose X amount of weight" is broken down into small chunks like "this month I will focus on doing just 30min of exercise per day" then adding on the extra goals as you go.
This isn't a failsafe. You can still have 'failures', but we aren't here to judge you (I think perhaps we do enough of that for ourselves). Rather, we're here to support, encourage and help you (even if that sometimes means a few home truths). Besides, relapsing isn't the catastrophe that it's easy to think of it as. If you think of it as a lesson in how to improve your plan, you'll go a long way.
And BTW, I remember who you are
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"