taking initiative action to achieve one's goals
Original Dramatica Definition
The Proactive characteristic will urge a character to begin problem solving on his own. This character will be a self-starter who is up and at it the moment he realizes a potential problem exists. Sometimes, however, a potential problem may not actually materialize and would have disappeared in short order by itself. Proaction may actually cause the problem to occur by irritating the situation. Worse yet, the character representing Proaction may act before the true nature of the problem is seen, leading him to cause damage to innocent or non-responsible parties, sometimes actually aiding the real source of the problem.
syn. to initiate action, execute, undertake, commit, implement