If however you are not sufficiently interested in the business, then you can never find enough time for it. What you need most therefore in my opinion is the "interest" in the business. When it is present, the time for it will always be found no matter how tight your schedule is.
The advice you need to give to people is that they should study the business and develop sufficient interest in it first. That done, they will always find time to invest in the business.
