1 Samuel 3:10 The Lord came and stood there, calling as at the other times, ‘Samuel! Samuel!’ Then Samuel said, ‘Speak, for your servant is listening.’
It took both Eli and Samuel a few times to realise it was God calling to Samuel.
It may take us a few times because we may not recognise who is calling!
But when we answer and invite God in, He will use us in mighty ways!