do it yourself

From wikipedia:
The phrase "do it yourself " came into common usage in the 1950s in reference to various jobs that people could do in and around their houses without the help of professionals. A very active community of people continues to use the term DIY to refer to fabricating or repairing things for home needs, on one's own rather than purchasing them or paying for professional repair. In other words, home improvement done by the householder without the aid of paid professionals.