As well consider the emotional connection as to why you want to change that habit. For example, don't want to see my daughter worry so much about my health. It breaks my heart to see her so concerned.
Follow them on a spreadsheet, week after week.
Once these are handled, you can focus on the remaining.
Number one tip: try to keep a record of what you eat cronometer.com myfitnesspal – I had a marvellous year of weight loss with that… before work started. If you don’t have time, writing it down or taking a pic of literally everything cuts down on extra snacking.
Bonus: cronometer records vitamin intake per meal and gives you a % of how well you are doing on the daily recommended targets for vitamins and minerals. That really motivated me.
2) Radical move for busy people – try to replace a staple. White bread, rice, potatoes – I knew I would snack often so I cut bread, rice and potatoes out of my diet and went for lentils instead – boiled, seasoned with olive oil and some salt
3) if you have a bad day, buy your snack in small amounts, enough to eat, never to store in the house