As a writer (or any business) in order to generate good financial returns for your efforts you will need to place a great deal of emphasis on product creation and marketing aspects of your business to turn "what might be" into "what will be" and become success you hopw to be.
Sometimes however, many writers fall into trap of becoming so involved in creative mechanics of writing process and tend to forget (at least temporarily) fact that this is also a business that needs to continuously generate money.
As hours, days and weeks needed to write that new book become all important and time consuming, other business matters tend to be placed on "do later" list or are simply neglected all together.
This means we need to s-t-r-e-t-c-h our thinking on a daily basis to ensure all aspects of our business endeavours are included into our daily routine. The successful entrepreneur knows that daily small actions build into a pattern of accomplishment over days, weeks, months and years throughout lifetime of a business and so commit themselves to building on specific actions every single day...
I have found that most profitable time any business entrepreneur can spend is to set aside a specific time each day specifically for purpose of focusing on generating ideas to grow your business potential and profits.
The best time to do this is during what is called "the golden hour" The golden hour is first hour upon waking each morning. Thinking positively and creatively at this time of day then sets tone for your entire day.
Many successful business people I have spoken to over years also tend to share a common trait... one of first questions that springs to mind somewhere at beginning of each day tends to be "how can I make money today" or self-talk to that effect. This can be a conscious thought or an unconscious thought that is always present in nature.
I have also found that simply asking yourself question "what can I do today that has potential to earn $100" works extremely well at keeping my mind focused on business aspect of daily affairs. These $100 ideas have repaid themselves many times over in terms of business growth.
For next 21 days (it takes 21 days to get into any new habit) spend time to simply focus on growing your business through generation and implementation of your $100 ideas.
As this daily routine becomes an automatic part of your daily life, your thinking becomes activated towards being aware of many money making opportunities that exist for development of your business. Over a period of time these ideas will compound as results of your efforts will lead to success as a writer AND entrepreneur.