Motivation is a reflection of the reasons why people do things. All behaviour has a purpose (often several). All behaviour is therefore based on choice – people choose to do the things that they do. Sometimes this choice is very restricted (sink or swim for example). Sometimes again, it is constrained by the law (for example, stopping the car when the traffic lights are red). And again, it is constrained by the norms and processes of society – for example, people tend to wear smart clothes to a party where they know that everybody else will be well dressed. In each case, however, there is a choice, though the propensity, encouragement and direction to choose one course of action rather than the other in the examples given is strong, if not overwhelming.