The strategic planning process is much more than a document that lays out your organization's strategic plan. The process itself begins with your people. By including your team in the process early on, they will better understand your organization's vision, mission and goals. Team buy-in will increase, and your team can effectively execute the strategy.
Rather than looking at the strategic planning process an event that takes place during set intervals of time, say every year, or every four months for example, it's a better idea to see it as a cyclical and agile process. The strategic plan provides a framework, but your team should be nurtured along the way, and ongoing communication will help align your people and strategy.
The following articles have great information about understanding team dynamics and motivators, as well as helpful information for anyone who is leading a team.