Self improvement is a term used to describe a variety of methods which can be used by individuals who want to take steps to improve their lives. As this term suggests the aim of self improvement is to achieve your self improvement goals through your own efforts. This term is often interchanged with terms such as personal growth and self development.
So, for example, you could use a self improvement technique or course to improve your working knowledge to boost your career opportunities at work. Or, as is more often the case, you can use self improvement techniques to make specific and general changes to you as a person. This could be a question of training yourself to have more confidence or of taking up a diet and exercise regime to improve your general health, for example.
Some people will take on their own self improvement programmes. They might, for example, read books or sign up to courses to learn more about how they improve their lives. Others may take on board a self improvement coach who can help them work out how to achieve their aims. The coaching here could be targeted at a specific improvement goal or could work on a general basis in that it could look to improve your mental, physical and emotional well being as a whole.