running start

flying start

An especially good start.

fresh start

A new beginning, without prejudices.

head start

An advantage consisting in starting a competition or task earlier than might be expected; given (or taken), for example, prior to the beginning of a race.

hit the ground running

To begin an activity immediately and with full commitment.

if I'm not there, start without me

I am not interested in the event and do not plan to attend.

make the running

To have a leading or influential position in a field or activity; to be more active than others.

off and running

Launched or launching vigorously into a course of action.

start a family

To conceive one's first child