Conviction comes when you believe that you have the absolute ability and resolve to achieve what you are striving to achieve.
Action requires you to work on your goals every single day ensuring that your actions are aligned to your goals. In addition to conviction and action, your behavior and feelings need to be congruent with the outcome you are expecting.
Everything about you needs to spell to you and others around you that achieving your goal is a done deal! To achieve mastery one needs conviction, aligned action & congruent feelings!