Building Your Own Diet Plan

I need to lose a considerable amount of weight, and I’ve always had issues with energy. Because I’ve gotten out of the habit of eating regular meals and only usually eat one large meal a day, it’s going to take me some time to get into the swing of a diet, but I just haven’t found any yet that seem they would work for me. I just need some energy and some good quality weight loss. I would be willing to commit some time to it if I found something that would help with the energy – not looking for fast weight loss. Thanks in advance for any help or experience that others can share!