Good luck with your weightloss hunni i hope your adchieve your goals you have set for yourself.
The only tips i have it to have a food diary its really helped me cos i discussed it with my dr and she told me what i was eating swrong also you can see for youself some of the improvments you need to make like if your not eating enough fruit or veg everyday and u can see where you can change your intake.Obviously it depends on the siet that your on. Im on a low-fat so that works for me. Also i found getting myself some good motivation has helped me stay on the straight and narrow but your trip to austrlaia is motivation in its self.
You have done so well already keep up the good work and if you do fall off the wagon dont beat yourself up about it just get right back on and start again.
take care
Teresa