Initiative is all about taking charge. An initiative is the first in a series of actions. Initiative can also mean a personal quality that shows a willingness to get things done and take responsibility.
An initiative is the start of something, with the hope that it will continue. Government and business start initiatives all the time. You can also talk about initiative as a personal quality. A person with initiative is motivated to do things. If you take the initiative, you're willing to get things done on your own. Taking initiative can be risky: If you do something on your own initiative, then there's nobody you can blame if it goes wrong.