A systematic science which provides rules, laws and principles for achieving adjustment with self and the environment is called

Mental Hygiene- It is defined as the science dealing with the preservation and promotion of mental health as well as prevention and treatment of mental illness. It provides rules, laws and principles for achieving adjustment with self and environment.

Key Points

Its objectives are:

• To develop respect for others.
• To help to realize one's potentiality.
• To enable one to know his or herself.
• To enable one to make an effective adjustment.
• To cause harmonious development and create happiness.
• To understand one's limitations and tolerate other's limitations.

Hence, we conclude that the given statement is about mental hygiene.

Additional Information

• Motivation refers to the process that guides an individual to achieve a goal. There are two main types of motivation which include extrinsic and intrinsic motivation.
• Learning is the acquisition of new behaviour or the strengthening or weakening of old behaviour as a result of experience. It represents progressive changes in behaviour. 
• Conflict refers to a situation in which a person wants to make a decision which has two choices and both choices seem good.