Plan a novel as if it is the most life altering event that could ever happen to you, because in many ways, it is. Your novel is an expression of your individuality and your deep imagination. Your beliefs and feelings are on display for the world to see, all they need to do is pick up a copy of your book, and of course pay for it. You are taking them on a journey that they have never been on before. A journey in to another world, another time, another level of existence. You control the path of this journey for your readers, but if you can hook them and turn them in to a fan they will follow you on many more journeys throughout your literary life-cycle.
You can reach your goal of becoming a published novelist in many different ways. You could submit your manuscript to agents or publishing houses. You could self-publish your work and hope that word gets out about your novel. Any number of paths can be taken to reach your ultimate goal, but there are some better than others, and one that is the best. Follow the guidance of someone who has been there before and you'll have first hand knowledge of the exact path to take to maximize your success in the world of publishing. There is much more information for you to look at as you plan a novel for maximum success.