when you are one step ahead of sb/sth, you manage to avoid them or to achieve sth more quickly than they do
A / ONE STEP AHEAD (OF SB/STH)
Meaning of A / ONE STEP AHEAD (OF SB/STH) in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005