What are the limits of John 14:14?

I was thinking about it, and I can't get my mind off of it. You mean to tell me that, as long as it is good for me and in the name of Jesus, then I can ask for anything?

Like obviously I can't ask for hard drugs. Duh. But what are the limits?

I ask because there's this girl I like and I don't know how to tell her, so I followed what the scripture said and basically asked for an indication on if and when to say it. Is that outside of the rules?