Fear of the Nicodemus approach

As a lay Dominican I find myself often feeling like Nicodemus, knowing the Truth of Christ, yet not knowing how I should translate that knowlegde into action. I have experienced too many intellectual Catholics who understand much in theory erbut really can 't be bothered with being a witness to the Faith. I want to be truly Dominican and pray that I can achieve the balance of study and contemplation and share the fruits in a way that actually helps another soul