Knowledge, strategy you say not a bad pointer but I would prefer to use the word "Investors Fate".
An investor who really cares and wants a solid Bitcoin portfolio will do anything within his power to consistently invest, and incorporate positive habits to propel him as he accumulates Bitcoin. In a simpler term, Investors need to have a plan, Target, strategy, Amount readily available of which they must be consistent, discipline about using this tools to create a good track for there Bitcoin holdings.

As I would always say, depends on how valuable you view Bitcoin to be, that is what will be the trigger.