I left this as a comment on another blog, and thought 'Hey, that's not bad' I should use it here... So here it is.
Knowing you have to make change to reach a goal and actually implementing it are so very different. I know the feeling, not from solely weight loss but from the time I sat and waited as a brown belt at Karate. I got my brown belt back in 2007, I was about 220 at the time and I constantly had people telling me I was a good teacher and good at the techniques and the self defence and pretty much everything to do with the whole karate thing.
And so I waited for my black belt grading to come just as the other gradings had. I waited and waited, grading came and went, but I was never promoted. I had bought into my own hype, people had been telling me I was going to be there and so I just stayed the course. We had a day with a bit of a workout, only really like 10 minutes of work, I thought I was going to die.
On that one day the idea that I needed change became a purpose. Like someone slapped me across the face and said 'Look, this is what you need to do!' I wish I knew how to replicate that singular moment of realization. As I splayed out on the floor gasping for air, unbeknownst to me, it was probably the greatest realization I will ever have in all my life. If I could give that moment to everyone I know, especially those that are embarking on, or renewing a weight loss journey, I would in a heart beat because it changed my thinking from "Yeah I should get in shape." to "I'm done with being unable to preform at a level I desire and I am going to make this happen, nothing will stand in my way!"