Manage weight well
Making the decision to lose weight, and to maintain a stable, healthy size, is an important one. Equally important is making sure you have the best advice and support on how to do that.
The Heart Foundation has good resources on reading nutrition labels, how to set yourself up to succeed, and guidelines on portion sizes: https://www.heartfoundation.org.nz/wellbeing/healthy-eating/how-to-lose-weight
The UK National Health Service also has an online weight loss support network and many excellent tips for how to lose weight safely: https://www.nhs.uk/livewell/loseweight/Pages/Loseweighthome.aspx
Dr Libby Weaver has written a helpful book about what to eat, which is also a good place to start: https://www.drlibby.com/shop/what-am-i-supposed-to-eat/