Oh, there will be some minor adjustments, but nothing your life won't be improved by. Your child will bring a whole new sense of purpose to your existence. It will help you rearrange your priorities. You will not want to waste hours on worthless pursuits, because you will want to spend time with your child.
Such a vast improvement to your quality of life could hardly be called a disruption. It's a stepping stone, a becoming, a metamorphosis into someone new, different, better...
And your child will help you with this, because your child loves you. It doesn't want you getting confused about your priorites, because it knows this will upset you. It wants the best for you.
For instance, my son loves me so much, it's taken four tries over three hours to get this written.