The real key is to live in an environment where the mind feels free to choose the right thing instead of being compelled by habit and inertia to choose the wrong thing.
Why does the lizard stick his tongue out? The lizard sticks its tongue out because that's the way its listening and looking and tasting its environment. It's its means of appreciating what's in front of it.
Why should we think upon things that are lovely? Because thinking determines life. It is a common habit to blame life upon the environment. Environment modifies life but does not govern life. The soul is stronger than its surroundings.