God designed us with a hole in our heart that only He can fill.  The void, the ache, the loneliness that we've all experienced when we allow ourselves to be still, is not going to go away as soon as we finally achieve or obtain something like good grades, the perfect weight, the perfect mate, the perfect job, membership in the right club, a spot on the team, our desired social status, recognition from our family, friends, or our community, or drugs, sex, or alcohol. 

The only thing that can erase the void in your heart and keep your heart feeling full, is when you allow the Holy Spirit to come live inside you...