You must show consistency over intensity. Through baby steps taken each day, you make routines. We become what we do routinely. With routines, we practice and gain mastery. Our understanding is enriched and made fruitful through the things we do.
If one of your goals is to improve your vocabulary and fluency, be sure to always use your dictionary to get the meaning of the words you are not sure of but the main key to high vocabulary and fluency is constant practice.
What are you most concerned about in communication? I will suggest you worry less on accent but focus more on speaking right and pronouncing your words correctly but ensure you practice often and before you know it, your desired accent will come naturally.
If you pay more attention on getting the desired accent first, you might be discouraged if you are not getting it.