People often choose things because of where they are. Your habits change with the cues around you and certain behaviors arise in certain environments. We are changed by the world around us. Habits are context dependent.

Behavior is a function of the person in their environment.
B = f(P, E)

Suggestion impulse buying is triggered when a product is seen for the first time and a customer visualizes a need for it. Expensive brand names will be found on the end caps and shelves at eye level. The more obviously available something is, the more likely you are to buy or try it. Our choices may not be driven by drive and choice but by the most obvious option.

We perceive the world with the senses but also with other ways. You can notice falling off balance or when a storm is about to happen. The most powerful sensory ability is vision. We are more dependent on vision than any other sense and so visual cues are the biggest thing to focus on. It is important to live and work in environments filled only with productive cues and devoid of unproductive ones.

You can be the architect of your environment. Every habit is initiated by a cue. We are more likely to notice cues that stand out. It's easy to not practice guitar when it is hidden. Creating obvious visual cues can draw your attention toward good habits. Redesign the environment. Put your apples in an obvious place and you will be more likely to eat them. Put your pill bottle right next to the bathroom counter. To drink more water, put full water bottles around the house. Make the cue a big part of your environment. The most consistent behaviors usually have multiple cues (consider smoking). Sprinkle triggers for good habits throughout the surroundings. Make the best choice the most obvious one. Environment design is powerful too because it is something you rarely do. Increase exposure to positive cues and remove negative ones. Be the designer of your world.

The cues that trigger a habit can start specific but over time the trigger becomes a bigger context. Habits are mentally assigned to the locations in which they occur. You establish a particular relationship. Our behavior is not defined by the objects. It is our relationship to them. Stop thinking of the environment as objects and think in terms of relationships and how you interact with places around you. Different people can have different memories and thus habits associated with the same place. Insomniacs should not stay in bed if they are not tired. This will help to associate the bed with the action of sleeping, rather than browsing their phone with the environment there. Habits can be easier to change in a new environment too. Create a new routine in a new place.

Have a clear dividing line between work life and personal life. Avoid mixing the context of one habit with another. The easier one will usually win. For example, you can use your phone to do nearly anything. You can be productive with it but also check social media. If your space is limited, divide the room into activity zones. Every habit should have a home. Each context will become associated with a specific habit and mode and thought. Focus can come automatically when sitting at the work desk. If you want behaviors that are stable and predictable, the environment must be so too.

Every habit is initiated by a cue. Make the cues of good habits obvious in the environment. Soon the entire context will become the cue.