I just found that my ratio is very bad - approximately 95% of development and 5% of marketing :(
I tried to change the ratio several times but I failed because I always had something "very important" to develop.
The problem was I never could switch between development and marketing. To avoid this trap, I want to stop development at some point and spend 100% of the time only for marketing, then come back to development.
Not sure if it's gonna work.
So, what is your ratio and how you switch between these two tasks?