Chasing whatever product happens to be selling best is usually the worst move available, since everybody else already had that thought and the competition will consume any margin left in it. That correction arrives early and carries more weight than anything around it.
Measurement gets the other recurring warning. A tracking service you do not trust will cost you quietly, because a partner miscounting your sales never announces the fact. Review each arrangement on a schedule and drop whatever produces nothing, instead of leaving it there from habit.
On copy, one instruction can be applied this afternoon: strip out phrases carrying a negative edge and put something active in their place.
Article marketing, network marketing and Facebook pages fill the remainder at the level of general guidance, alongside a free book download and a piece of submission software.
Twenty posts, none of them personal. Take the popularity warning and the tracking advice, both of which will save you money.