Just do it!
That is the catchy payoff used by Nike.
For most people venturing into sports that may not be the best advice to follow. Yes, you should indeed start today, but do it according to a plan, or you may end up with severe injuries that will only delay the whole effort and postpone the results you wanted in the first place.
In business, we also often find the “Just do it!” mentality. As no plan of activities will survive the meeting with reality then why bother planning. Let’s just do something and see what happens. We can adjust the course as we learn what works.