A self-transition indicates that the flow leaves the state, dispatches any exit action(s), re-enters the state, and then dispatches any entry action(s).
There are several ways to draw a self-transition:
Draw a transition from the state and drag the link away from the state.
Drag the link back to the state and drop it.
Or
Draw a transition between two states.
Drag the opposite end of the link line back to the desired state.