I can tell you of two specific instances in which the Holy Spirit intervened directly (I’m sure there are many, many indirect ways that I’m unaware of- God does what He does!).
The first was when I was single, and working as a restaurant manager. I had attempted, and failed, many times to quit smoking cigarettes. Finally, on Ash Wednesday, I literally got on my knees in my apartment and said, “Lord, I can’t quit on my own. You are just going to have to heal me!”. From that moment, I never experienced any cravings for a cigarette; never overate or was irritable per my usual attempts. I even FORGOT that there was a full carton of cigarettes in my fridge!
The second was shortly after I was married, 23 years ago. Two days after our honeymoon, my husband lost his job. He had been offered a position in another city, and we went to a Pro-Life Mass. During the post-Communion song, I felt the Holy Spirit rush into my body. I have no idea how long He was with me; time stood still. But I felt the most full expression of His love for me - I cannot really describe it. As I felt Him “leave” (because we all know He’s with us always, really) me, I said out loud (I think) “Don’t go, don’t go!”. I never really knew WHY He visited me in that way until last summer, when I attended a Theology of the Body course. I saw a picture of a closeup of St. Teresa of Avila’s face in the sculpture by Bernini depicting her ecstasy of the Holy Spirit [
https://goo.gl/images/w4GtdT] , and I KNEW that’s exactly what I had felt. God allowed me that close, deep ecstasy for that brief moment to show me how much He loves me, and to help me, because my marriage was already broken and I would be facing many years of trial.