Nah, you're not unreasonable. It IS hard. If it weren't, there wouldn't be so many overweight people in Britain. And maybe the posters here are in the magical, tiny percentage who have lost it and have kept it off, but most likely they've struggled in the past and will do again in the future.
I think the most important thing is to keep trucking on, and not fall into a black pit of despair/give up when you have a bit of a bad day. It's all part of a journey.
I keep my motivation by meal planning on MFP, and by buying or making healthy (or healthier) snacks. Once I've bought the food I'm going to be eating, I feel quite committed to actually eating it, and I really enjoy the process of making treats I can eat without feeling bad.
It really is (almost) all about food. You are right - slaving away at the gym for hours burns barely any calories compared to swapping a chocolate croissant for a few scrambled eggs in the morning.
Apparently, statistically, you're more likely to keep to a diet if you weigh yourself daily.
I also (guilty pleasure) quite like rewatching shows like Secret Eaters when I'm dieting as it pleases me to see others furtively downing kebabs while I nibble on a salad. Otherwise put, I like reminding myself that even if it feels slow, I'm way ahead of anyone who hasn't started.
I guess it's also about what motivates you. Whether it's a holiday, a gorgeous pair of shorts bought one size too small, being smaller by a next birthday or next year... Focus on how good you'll feel on that day.