scratch one's own itch

Definitions

1. To do something out of motivation to solve a personal problem; to take matters into one's own hands.
   idiomatic
2. to masturbate
   euphemistic, idiomatic

Examples

“Every good work⟳ of software starts by scratching a developer's personal itch.”

“The best advice for coming up with a business idea is "scratch⟳ your own⟳ itch". This is good advice for a variety of reasons. If you can think⟳ of a problem that you'd like⟳ a business to solve⟳ for you, the chances are other people share⟳ that problem.”

CEFR level