Okay, I've lost serious weight (40lbs+) in the last couple of years. Everyone is very different but here's what worked, _very_ well, for me:
* Count calories. With a little bit of research and some practice it is pretty easy to at least estimate how many calories you are consuming. Find out what your daily intake should be, then stick to it and limit fat intake to <30% of those calories.
* No snacks, no grazing. The calories for coincidental eating are summed (not forgotten) by your body. Before you know it you're consuming 300+ calories extra per day.
* Exercise regularly. Cross train. Do things other than cycling such as running and going to the gym. Don't make excuses to avoid exercise.
Ironically, I have found that permanently following strict rules without exception is deeply liberating.