Try fasting, i ‘fast’ from about 7:30pm till about 1pm, except for a coffee in the morning, and otherwise eat the same as i always have in my ‘eating window’. Ive lost 20kg in 7 months doing this and havnt been deprived or hungry at all. Also pretty much stopped drinking alcohol.

The key for me is not being too obsessive about it, my fasts are flexible, sometimes i break it, but mostly i stick to it, when i dont, i dont beat myself up about it.

If you want the goodness of veggies then blend, don't juice. When you juice all you get is the sugary water content (as in the natural sugars inside veggies) but without any of the good nutrients in the bulk of it, no fibre for your diet either. Blend them with other things (eg carrot, apple, ginger, ice - yum) if you want to replace a meal with basically a liquid salad.

If I recall correctly chewing helps trigger your brain to say "full" so this might not help much, as your brain will still be craving a meal.

Whatever you do, don't join any of those dangerous PHATT programs

No or very little carbs, heaps of protein and veggies. This is only for a short time though. This kind of diet is not really sustainable for most of us

Deprive yourself of calories and you will lose weight. You’re probably better off eating more protein instead of replacing meals with vegetable juice as that will fill you up more and make you less likely to snack.

I can't say whether that would work or not, but I'd be very wary of what else you eat. If you aren't getting any protein or fat from the veggie juice you may find you get hungry again quickly and end up snacking more and consuming more calories than if you'd just eaten a meal in the first place. You may find it more satisfying to eat the veggies with some hummus or lean chicken. Or you may be better off having a strict 3 meals a day only, no snacks.