Simply put, effective leaders play to win. Thus, in order to win you must have a default aggressive.
To provide some other perspective and in sales, there’s a famous quote saying “Timid Salesmen have skinny kids”.
This is also true of leadership.
This in mind, there’s many times as a leader it’s in the best interest of your team and clients to take the softer approach. There is much truth is this. In fact, this is the challenge of leadership knowing when to decipher between the two.
But as a defaut, effective leaders thermostat is set as aggressive.