There is no such thing as instant success. 99% of people who become excellent at something have spent 10 years learning their trade. Poker was defined as needing to play 1 or 200,000 hands to become an expert. Internet poker has reduced the number of years required, but not the number of hands played.
Each hand, and each game, should bring you closer to understanding your strengths and weaknesses. Thus, each hand allows you to practice overcoming your weaknesses or improving your strengths. This supposes that you pay close attention to the play, whether in or out of the hand.
Kathleen