Making small changes over a long period of time helped me a lot. I always used to try to change everything at once and it was always a disaster because I'd end up going crazy with junk food again when I couldn't take the cravings anymore. like maybe for example. one less bag of chips a day and just try to maintain that for a month and add a vegetable and fruit to meals and more water. I learned that small changes over time are more sustainable than making sweeping changes at once