I think it’s also important to have small goals. In another post you said you had 10 stone to lose, same as me when I started. That can be overwhelming. I’ve found it really helps to have small goals. E.g. lose 7lbs in a month, lose 5% of your weight etc. Small goals will make what you are doing feel more manageable, which in turn will help how you are feeling about cutting ‘all the bad food out’.
many people on here also have little rewards for themselves which can also help.