Satsang means meeting saints/ great people who implement what our scriptures tell us and have experienced God and exchanging good thoughts with them.
Through this, an individual becomes selfless and benevolent. Thereafter, this individual will be led towards a selfless goal and activity and be inspired to serve others. Consequently, not only will this individual benefit personally, but the society and country will also prosper through this person. The end-result will be development of people spiritually, psychologically and physically.