For those of us practicing time-line jumping or parallel-reality hopping, perhaps the greatest challenge is the perseverence step. i am finding it essential to develop certainty.
A lesson playing out today in several people is the necessity of focus upon the heart in the now, rather than the mind in the future... to let go of planning. Another way to state this is, that rather than controlling from the ego level, to surrender to the higher self's plan and manifestation, and trusting that it is always bringing the most appropriate blessings. Our conscious mind focus is to be on our preferred intended "reality", whether or not it is what is coming to us in the moment, it is the perseverence in focus with intent upon the preference, which steers by the law of attraction, what shall come... but let go of controlling each moment, trusting that the overall flow will trend as we intend, even if the individual moments aren't all in alignment therewith.