Sometimes, approaching things from a different angle can help make some difference. Being someone who loves to wonder my way to inspiration (this is the daydreamer in me), what comes to mind involves researching what different parts of my body need in order to function efficiently. What foods/chemistry/energy does my nervous system thrive on? What about my vascular system or endocrine system and so on. What foods and drinks are found must be totally enjoyable, otherwise it will be a struggle to easily commit to change.
Routine plays a huge part in overcoming addictions or habits. Besides going to work a few days a week, I have little routine. A lack of routine allows time for sitting in front of the tv. I associate tv with eating. Association tends to keep us repeating questionable habits. Been beating myself up a little lately for lazing too much. It's easy to laze during this pandemic, especially when we're encouraged to do little or none of what would typically keep us active or occupied.
Finding the right motive or motivation for change can be deeply challenging. We can find a lot of what doesn't work before we finally find what does work. It's important to not beat our self up along the way as we're working out how we best tick.
Strangely enough, drinking more water plays a significant part in my life. I really need to get back into this habit. Tend to go for filtered water. Drinking more water is energising. Our cells thrive on hydro power. Energising or exciting our body in such a way can sometimes be enough to begin tweaking our mindset and motivation levels.
I believe it's also important to turn up the volume on intuition/inspiration. You know that voice you'll sometimes hear saying to you something like 'Instead of opening that pack of ____, go for a walk or clean the bathroom for exercise'. To be in 2 minds (the mind of intuition/inspiration and the mind of ego/habit/ingrained belief) can have us resembling an insane person, especially if we were to voice these minds out loud. The arguments that go on in my head are amusing at times, resembling a parent and child: 'You need to drink more water'. 'No, I don't want to. I'll do it later, after this glass of coke.' 'No, you'll do it now.' 'Fine!' Such dialogue can definitely resemble an ongoing battle between the self we have come to know and our most natural self.
Working our self out (of existing habits/mindsets) is, I believe, one the greatest challenges we face in life.