I don't think this is true, or at least not always true. A good example is the armed forces, where recruits are forced into a very regimented routine. My fath

I don't think this is true, or at least not always true. A good example is the armed forces, where recruits are forced into a very regimented routine. My father was in the marines, and by his description they turned him from someone who lacked discipline and was not fit into the exact opposite. When he retired, he kept up his routines: rising early, keeping fit. He's tried to instill the same discipline in his daughters - it's not as effective when it's not mandatory however.