Knock and it shall be opened.
Or something like this, (I can't quote bible well, sorry.) But what it means is to keep asking - keep trying to better your life, never loose faith for a better day.
Last week the reading was the lady kept asking a judge to rule in her favor - to the point where the judge did. So keep asking.
GOD will answer - and you will be amazed.
Nagging is a human emotional responce, to someone avoiding doing something.
You are NOT nagging GOD.
Somewhere in SOP she says that Satan and his angels do not like it when we keep on asking for the HS to fill our hearts.