Once you are vibrationally harmonized with an experience, and you thus feel as if it is happening, experiences that match must then manifest and are thus considered to be inevitable. For example, your present life experience is considered to be inevitable since you are harmonized with it and thus matching or similar experiences must manifest in sequence following your present life experience.
As you give a considerable amount of thought to a topic that results in an extensive sequence of matching thoughts, your life experience must then begin to reflect matching experiences of a similar nature to an extent and for a length of time that matches the extent and length of time for which you give the topic your attention.