I can usually sense that a leading is from the Holy Spirit when it calls me to humble myself, to serve somebody, to encourage somebody, or to give something away. Very rarely will the evil one lead us to do those kind of things.
When the Spirit has come to reside in someone, that person cannot stop praying; for the Spirit prays without ceasing in him. No matter if he is asleep or awake, prayer is going in his his heart all the time. He may be eating or drinking, he may be resting or working- the incense of prayer will ascend spontaneously from his heart. The slightest stirring of his heart is like a voice which sings in silence and in secret to the Invisible.
Isaac the Syrian
As the minister stepped up to the pulpit he discovered to his chagrin that he had forgotten his sermon notes. As it was too late to send someone for them, he turned to the congregation and said, by way of apology, that this morning he should have to depend upon the Lord for what he might say, but that for the evening service, he would be better prepared.
The breathing I did yesterday will not keep me alive today- I must continue to breathe afresh every moment, or my life will cease. In like manner, yesterday’s grace and spiritual strength must be renewed, and the Holy Spirit must continue to breathe on my soul from moment to moment in order that I may continue to enjoy Him and to work the works He has assigned me.
How hard is it for God to get your attention? Do you regularly practice turning aside in your day? That is, taking a moment to listen to God- because God, through the Holy Spirit, really is speaking, because we know, every place is filled with the presence of God. There is not an inch of space, not a moment of time, that God does not inhabit.