There is a psychological method that I found to be very helpful. Thinking of companies that sell packaged foods as your adversary.

They want to take your health, make you addicted to what they are selling and also take your money. Not very different from a drug dealer.

When in this mindset, avoiding these things feels like winning and taking care of myself, don’t need to worry about if sugar is really bad or if eating these things is normal. Or if I deserve a treat after working hard all day etc.

After some time I just keep winning and losing weight and don’t really have any cravings to eat bad “food”.

And fruit tends to be cheaper than packaged food too.