Over the years, despite the positive gains made in terms of democratic tools and good governance in Sierra Leone as indicated on the national emblem (Peace, Unity and Justice), the country have been fraught with difficulties and challenges. This is an academic paper presentation that gives a clear understanding of the practical implication of Sierra Leone's strides towards political tolerance, national unity, Social cohesion and democratic good governance as evidence based on the baseline study conducted by the National Commission for Democracy, as well as underscoring the challenges, recommendations and its policy implication for National security and sustainable development in Sierra Leone. It is imperative to note that National Security and Sustainable Growth and development highly depend on the fundamentals of the three main indicators as aforesaid for democratic consolidation in Sierra Leone. It's worthy to note that Political tolerance leads to National unity and National unity leads to Social Cohesion and Democratic good governance.