One of the challenges of maintaining weight after a significant loss is to minimize hunger and to stick to a somewhat restricted, compared to what your body craves, plan. To sort this out I've been experimenting with what I eat when. While I haven't found a perfect solution, moving to a breakfast with some fat and sugar in it and then exercising followed by a source of protein seems to work best for me in the morning. Traditionally I would only have a light breakfast. While little or no breakfast probably works for some, I seem to respond to a bit of dessert early rather than later.
There is some evidence that this approach works for others - albeit in a different phase.
The trick is to experiment and find what works best for you - be your own amateur science project. I've been in this phase for about eight months and am still actively experimenting. I probably have at least two years to go before I sort out the things I would like to try as feedback is poor.
There is also the issue of exercise. While a back of the envelope calculation will show that diet is much more important than exercise when it comes to Calories, I find adding exercise is more complex - that feelings of hunger drop and that management is easier. There are so many other benefits to exercise that folks should just do it no matter what their physical shape. We are made to move!