Proactive

google

ref

1930s: from pro-2 (denoting earlier occurrence), on the pattern of reactive .

wiktionary

ref

pro- +‎  active; originally coined 1933 by Paul Whiteley and Gerald Blankfort in a psychology paper, used in technical sense. [1] [2] Used in a popular context and sense (courage, perseverance) in 1946 book Man’s Search for Meaning by  neuropsychiatristViktor Emil Frankl, in the context of dealing with the  Holocaust, as contrast with  reactive. 

etymonline

ref

proactive (adj.)

also pro-active, of persons or policies, as an opposition to reactive, "taking the initiative in a situation, anticipating events" as opposed to responding to them, 1921, from pro- + active. From 1933, in psychology (learning theory). Related: Proactively; proactiveness; proactivity.