Good on you for starting a journal and setting yourself goals.
I realise I look pretty big now, which I guess I am, but I have lost a lot of weight in the past.
When I was younger I went from a very fat 115kg to 75kg! Through exercise and calorie control. 40kg Lost in a year. I then started at the gym and added a stack of muscle.
Just a few things.
1. Diet, I realise you are following a particular plan, which you believe in... My only concern with limiting yourself to 1 large meal a day is that when you feel hungry it increases the chances of you cheating and eating something you shouldn't. This is important when you are trying to control your calories.
2. Weight loss has a lot to do with State of Mind, Stress, negative thoughts etc, all make it harder to lose weight. So yeah, taking that into account, maybe don't give yourself a rating every day. The same goes for the scales, weigh yourself once a week, It's about achieving your goal at the end of 3 months, not at the end of every day.
3. If you are trying cardio every day, I'd try and mix it up a bit so it doesn't get boring... High Intensity Interval Training is great for burning calories as well as keeping your heart healthy.
Keep Up the Good Work