The document discusses four best practices for strategic planning based on BCG's research and experience. It recommends that companies explore strategy at distinct time horizons including long term (5+ years), medium term (3-5 years), and short term (1 year). It also suggests constantly reinventing and stimulating strategic dialogue, engaging the broader organization, and investing in execution and monitoring of the strategic plan. Effective strategic planning requires addressing different time frames, avoiding repetitive processes, involving the whole organization, and focusing on implementation.