Looking for something more!!!!

Hi!! In 2001 I was a thirty year old Dad that weighed 285lbs. + . I could not sleep at night because of the horrible heartburn, and could not keep up with my daughters (13, 7 & 4). I got out of breath walking up one flight of steps and my wife was no longer attracted to me. Everything pretty much sucked.
I went to night school through the late 90's, working 50-60hrs/wk, catching McDonald's between work and school; school all night and eating dinner at 10:30. When I started I weighed about 200, 5-1/2 years later I was over 285. I was depressed and pretty down, this is not what I had been years back coming home from Desert Storm a lean, mean 185.
I wanted to feel good again, I wanted to play with my kids and do the things I had done 5 or even 10 years prior. I wanted to live again, not be a couch potato worrying about what I was going to eat next.
When 9/11 happened, it sparked a thought in me, knowing that I could not be called back to service, I had many friends and former millitary comrades asking all of ourselves the question, "Will I have to re-enlist to protect our country from further attrocities." This was the the what pushed me over the edge. How would I be able to protect my family in the condition I was in at this time.
I talked with some co-workers and did some research, I needed something that was very structured; eating and fitness. A friend let me borrow his copy of "Body for Life" Though I was not into doing contests, I did like the structure on the program, in and out of the gym in under an hour and a eating regiment that my 5 year old could understand and follow.
I went from 285 to 225 in about 6 months. I was estatic, I felt great, look great, comparatively. I like who I was again. That was summer of 2002, I have been fluctuating between 220-235 for the last 5 years. Every Janurary, I have the resolution to loose another 30-40lbs. I do well for a while then fall into the party trap, the weather breaks which means beer on the deck, and hot dogs and hamburgers.
I was talking with a good friend who runs Marathons, and told him that I was going to look into Sprint Triathlons, he looked kind of dumbfounded, but I explained that the goal of loosing weight was no longer a challenge. A triathlon would be a challenge, to take me the that next level. Even if I get half way through the training and decided it was not for me, I would definitely benefit from it.
So here I am, alternating my cardio workouts, running, biking and swimming but with no structure. I really think I am hooked, even though I don't have a bike and haven't got a clue if I could make the distance. So I am now looking for that same structure that I found 6 years ago.

That is my story, I am open to any help, suggestions, thoughts that anyone may want to offer.

Thanks,
A