Consider Intermittent Fasting

Fasting sounds extreme, but can be a way of improving metabolic flexibility (switching easily from working on carbohydrate to fats) in addition to reducing the will power required to endure a calorie deficit to one or two days per week.  A practical way to build into this is to skip breakfast and then progressively delay lunch, eventually you should find that you are able to function properly until the evening meal.  Starting the day with a coffee and coconut oil or MCT oil, or even a ketogenic energy gel may help ease the transition into ketosis.  A boiled egg or protein gel may help alleviate hunger and bridge the gap until dinner.  Fasting on a Monday and Friday may help maintain a calorie deficit over a week whilst allowing you to enjoy a guilt free club dinner and night out.