Hi Maurice. A good question! If by “means” you mean the “financial means” then definitely the barrier could be financial or at least perceived to be financial. I’m of the opinion that healthy choices can be made for people in almost any financial situation. Of course it’s more difficult than simply buying food that’s convenient, but the real irony there is that most “convenience” foods actually cost more per serving than fresh foods.
If by “means” you mean the will-power, then I’d say of course that this is psychologically-based. Will-power can be a very tricky thing to deal with. Again, oftentimes it’s a matter of someone selecting what’s “easy or convenient,” versus picking what they intuitively know is actual best for them.
When working with our clients, the key is to figure-out exactly what are their personal barriers and to try to help them overcome them.