The other day I was alarmed when a friend shared with me how she felt that the "Holy Spirit" had been speaking more clearly to her and based on it she cancelled a visit to see a piece of furniture she was considering to purchase from a second hand owner. She also regretted of NOT following this "nudge" of the "Holy Spirit" a week before for another type of furniture, resulting in a wasted visit because it turned out it didn't meet her criteria.
These are just the latest in a series of decisions where she prioritizes obedience to this "nudge" even when sometimes it doesn't make sense to her. The reason she kept doing this for years is because she said she usually later "understand" why the "Holy Spirit" nudged her this way especially when at the time of the decision the direction didn't make sense to her (i.e. her reason tells her to go one way, but the "nudge" tells her to choose something else). She regarded increasing "trust" of this nudge over reason as a measure of trusting God more. Some other examples over the past year: decision to change residence, picking a date for a plane ticket (like Tuesday vs Wednesday), choosing an agent to sell her house, staying home on a Saturday because she feels there can be a car accident, etc. Occasionally she links this nudge with tongue prayer (between 15 minutes to an hour) by saying 'The "Holy Spirit" impressed me to do praying, I don't know why', and so postpones a planned activity for the day (like cooking / cleaning).
Since she classifies herself as "Pentecostal" I'm asking the question from Pentecostal perspective. I am not that familiar with Pentecostal teaching about the Holy Spirit role in guiding everyday decision making, so I don't quite know what shape the answer will be.
To add focus to this question, below are some possible angles I can think of that the answer can address. These angles represent all elements that I sense are operative in my friend's actual decision making based on her understanding of the "Holy Spirit" role in making everyday decision. Addressing any one or more of these angles should suffice to make the answer acceptable.
Is there guidance to distinguish between the impression / nudge / voice / command of the Holy Spirit and simply "gut feeling" ?
Is there guidance to distinguish when is it too mundane and when is it important to consult the Holy Spirit?
Is there teaching that the more one is "in tune" with the Holy Spirit the more "advanced" one is, and that is one area where a believer should strive to increase this "sensitivity" to Holy Spirit guidance?
Is there teaching that the more one is able to "suspend" reason to obey "the nudge" of the Holy Spirit, the more faith one has?
Please note that for this question I'm excluding the Holy Spirit's role for sanctification (fruits of the spirit), conviction of sin, leading one to the truths about Christ, important life decisions (marriage, becoming missionary, choosing career), etc. because the Holy Spirit role for those are undisputed. This question is solely for Pentecostal teaching on everyday decision making that for other denominations are usually relegated primarily (though not exclusively) to regenerated human wisdom / human reason.
Therefore, for other denominations, the Holy Spirit works through human reason but not felt over and against reason, like how God sometimes communicate to an OT prophet. But in my friend's way of describing the "nudge" of the Holy Spirit, there seems to be another personality / consciousness that she clearly distinguishes apart from her regular thinking / emotive / willing powers and taking account of everything that goes on inside her, she prioritizes "Holy Spirit" over human wisdom & reason even in everyday matters and frames it as obedience.
I found a sermon series "The Holy Spirit and Wise Decision Making" in which the pastor discussed 3 options ("Traditional", Pentecostal, and Wisdom) based on a book by Dr. James C. Petty Step by Step: Divine Guidance for Ordinary Christians, which can provide a broader perspective. See notes from sermon series : Part 1, Part 2, Part 3, Part 4.
Another book the pastor quoted was Decision Making and the Will of God: A Biblical Alternative to the Traditional View by Dr. Garry Friesen already having the 25th anniversary edition, first published in 1980. I haven't read both books, but I don't think the books represented the perspective my friend takes. Therefore I'm asking for the Pentecostal teaching on this.