Returning to our true nature

What is bodhicitta? Within ourselves we have the true nature of mind, this inherent state of mind. How do we discover this true nature of mind within our lives? How do we return to this true nature of mind that is called bodhicitta? Everyone of us has the true nature of mind, everyone of us has Buddha nature. So, are we still having so much suffering, so many afflictions? We have a Buddha nature, why do we have so much suffering? Because we have not practiced, we have not practiced well.