It is in the ordinary events of every day that we develop the proactive capacity to handle the extraordinary pressures of life. It's how we make and keep commitments, how we handle a traffic jam, how we respond to an irate customer or a disobedient child. It's how we view our problems and where we focus our energies. It's the language we use.
— Stephen Covey

If you're proactive, you don't have to wait for circumstances or other people to create perspective expanding experiences. You can consciously create your own.
Stephen Covey proactivity quote

Proactivity quotes
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The reactance formulation, because of its articulation in terms of specific freedoms. . . provides insights into control motivation. . . Reactance theory conceives a modest form of control motivation. Reactance is directed toward the restoration of threatened or lost freedoms, and it is therefore (a) specific rather than general, and (b) reactive rather than proactive.
— Jack W. Brehm

In addition to self-awareness, imagination and conscience, it is the fourth human endowment-independent will-that really makes effective self-management possible. It is the ability to make decisions and choices and to act in accordance with them. It is the ability to act rather than to be acted upon, to proactively carry out the program we have developed through the other three endowments. Empowerment comes from learning how to use this great endowment in the decisions we make every day.
— Stephen Covey

After Lockerbie, everyone thought, now we've learned the lesson of how to be proactive instead of being reactive. Unfortunately, September 11 came and we know the result. Thousands of people lost their lives. Security totally failed, not at one airport, at three different airports around the country.
— proactivity quotation by Isaac Yeffet