A well-kept food diary doesn't lie or forget about what you've eaten. I've found it to be essential in my own weight-loss journey. By examining the records for a certain period of time (eg during a "plateau") you can work out not only the energy value of the food, but an approximation of nutrients, fat content, protein, etc. It's great for analysing why weight-loss stopped or reversed and then adjusting your diet accordingly.
Hmm, I was just about to write "Good Luck!" but caught myself in time. Weight-loss and good health has nothing to do with luck. it's all about knowledge and commitment and perseverance.
Persevere, Minny, and you'll get there!