(idiomatic) to obstruct, to hinder

(product development) project

attitude toward, stance / behavior, manner

to bring about

project (planned endeavour)

trouble, kink, interference, hindrance, disruption

make progress

an advance; progress

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend