When our prayers are answered, do we thank God or do we have doubts that God is the One responsible?

I was reading The Intercessory Prayer book and it raised this very point. And I couldn’t help but think that sometimes that’s true. Why is it that it can take me a few moments to say thank you? After all, shouldn’t that be my immediate response?

For myself, many times my gratefulness and thank you are immediate. But there are occasional times when it takes me a little longer, when I hear that whisper in my mind, “would that have happened anyway?” That whisper-it’s from Satan. Banish him and give your thanks, and any doubts, to God.

For our Lord will appreciate the first and take care of the second ?