Having the right motivation and drive to be successful is only part of the equation. If you are willing to put in the work, then you need to make sure that your goals are clear and you have the right support structure behind you.
If you don't love what you are doing, then you will most likely be unable to put the effort needed into maintaining a pace optimal for improvment and success.
Set clearly defined and realistic goals. Go over these goals and make sure that your instructor is aware of these goals so that he can help you reach them.
Make sure that you do everything in your power to help improve your lifestyle choices so that your BJJ can benefit from it. This involves proper nutrition and dietary supplementation.
Sleep and lifestyle choices to avoid things that are detremental to success like drugs and alcohol.
Additional conditioning from a qualified personal trainer preferably with grappling experience will be essential.
The right gym facilities and instructors is a key factor to truly develop the potential of a fighter. Without a good gym, a fighter can be limited based on space and availability of training times.
Without the right coach, a fighter’s improvement will be slowed down considerably due to lack of experience or expertise.
The best team for the fighter is also of extreme importance. The right training partners will be of significant benefit to the overall group as well as the individual. Other practitioners who will not injure you and who will at the same time challenge you and whose goals align with yours and show up to work are the guys you want to surround yourself with.