Expectations is micromanaging Allaah. It’s to fixate on the goal because you don’t trust the process. It’s to insist on the how because your ego fears being made obsolete if you were to surrender your mental constructions to your heart.
Ultimately, do you want to attain that one goal that you conjured based on experience or do you want what puts your heart at ease? Because the two are often mutually exclusive in that your heart thrives in the absence of mental constructs controlling the how.
Having expectations creates a bifurcation of focus that inevitably pits one’s attachments against the divine will, where the latter is seen as an obstacle to one’s ultimate happiness. Letting desires arise organically is to receive the flow of manifestation.