A tutor, and a good one, can help a tremendous amount, however it is in your hands ultimately. Decisions, you will find as you grow older, are far more important than you may have initially thought them to be. The ability to make a good decision is something of an illusion to some, weigh the pros and cons considering time into the outcome of course to arrive at the best possible result befitting your goal and stand firmly on the trust you have made the right choice and you will be successful. Repeat this throughout your life and you will develop a fundamentally successful ability to improve. By asking this question you have taken the most important step, now follow through.