In addition to power, love and righteousness characterize the coming of the Holy Spirit. For a Christian to receive this double blessing of power and purity, you must renounce all rebellion in your heart. Practically, you ensure that every area of your life and self belong to Jesus. You give up all sin. And, more than that, you give up every questionable habit.
Then, with Jesus as your only source and supply, you beseech him for the baptism of the Holy Spirit and fire!