Most Imp weight loss tip

Drink tons of water!

Never blindly follow any health/weight loss/diet/fitness advice. Follow up with your own research (preferably using more reliable and credible sources over anecdotal or commercially driven) so that you have an understanding of the why and how so you can make more informed decisions for yourself. Ask questions, especially if something doesn't seem to make sense or isn't working as described.

Track everything as accurately as possible. Yes, even if you think you "blew it". Track it. If you subscribe to the idea of a "cheat" day or meal, track it. It's easy to convince yourself it's not so bad if you don't have it there to look at.

Edit because my brain forgets words and then replaces them with numbers.....grrrr

I have found that mixing weights and cardio is what works best for me. I use the tredmill every trip to the gym, then do abs and legs machines and then the elliptical or stationary bike. Start small and keep building. I started at only 30 reps and am now up to 200 and it feels AWESOME!!!!

Be willing to change your plan. What worked last year for me, wouldn't make much difference today. Keep adjusting, keep learning, keep trying something new. Celebrate every victory with something helpfull. New shoes, a fitbit, ipod, healthy recipe book.....
When things seem slower, then appreciate how far you have already come, and take a hike up a mountain you wouldn't have been able to climb last year.
It's been a year now, that's 60ish pounds, size 18 to size 10. And I can run. I even like it. wow.

I think my tip is to start small, so take baby steps. We all have learned behaviors and they will not change in one day, one week, one month. Replace these unhealthy behaviors that are not working with new ones. : I say start with looking at labels for calories and measuring your food for portions.

I am a list maker.... so I make a list of all the workouts I need to do for the week/month-all in bright colors. I also cross things off the list that I completed because it is SO satisfying to check off a workout

1st of all, like others have said, you must really want it & be doing it for yourself. Because if not, it's hard to stick to.
2nd, don't starve yourself. You will see a million girls eating 1200, most of them are doing this the wrong way. Eat between your BMR & TDEE...you will be good
3rd, don't eliminate anything from your diet. Use moderation & if it fits your macros, eat it!
4th, weigh EVERYTHING. I have a food school & weight it all, even liquids. I dont use the spoons. I believe weighing is most accurate.
5th, prelog...plan out your days the night before. So u have everything already logged here when the day starts & u know what u can eat to hit your goals

I think maybe you said 1 tip whooops lol

Listen to what your body wants - you'll feel a hell of a lot better for going to the gym rather than eating a family sized bar of chocolates. However, sometimes you need to eat more or you're too tired to go to the gym - not an excuse to binge, but your body needs to rest and refuel so you have energy the next day.

find an exercise you enjoy - if it's not a chore then you will stick at it
and
track everything going in

1) Track weight + measurements frequently but ignore the noise, focus on the trend. ( http://www.fourmilab.ch/hackdiet/e4/ )

2) If calories used is more than calories consumed you WILL lose weight, after that it is just details that help YOU to comply with your chosen means of reaching your goals.

3) Set achievable short term goals, reward yourself when you achieve them (and they need to be things YOU value).

4) Set long term goals and review regularly in light of the trends you are seeing in your weights and measurements.

For me using the 5:2 diet (allowing me to create a calorie deficit over a week with very little effort) in conjunction with actually understanding what the reading on the scales mean (focusing on the trend rather than panicking over daily noise) means I am now making consistent and predictable progress after 20+ years of wandering in the wilderness trying every new diet that came along.

Losing weight is simple (see 2) above) but that doesn't make it easy! Because it can be hard people like to over complicate it but if you track what your inputs (calories) and outputs (weight and measurements) then you won't go far wrong

Very simple. 2 days a week keep your food intake at 500 calories for a woman, 600 for a man. Most people split "fast" days into 2 meals. Personally I prefer a single bigger meal in the evening. Eat "normally" on non fast days. Initially if you are at a stable weight and don't change what you eat on the non fast days (i.e. you don't massively over compensate! Some over compensation is fine) you will loose about a steady 1lb a week (about 0.5kg) because you are creating a calorie deficit of 3-4000 calories over a week. Much easier than it sounds

I think the original Horizon program that Michael Mosley did is probably available on iplayer in the UK or youtube?

Persevere, learn and improve.

Honor your commitment to you.

No excuses. No putting it off, no self-sabotauge.

When your tired of logging and working out and just want a quick fix and wake up that perfect weight. Remember that you didn't wake up at that size so give it time and keep going.