I can relate a personal experience concerning this.
After God rescued me from absolute darkness and misery and depression I fasted a lot just to keep the flesh weak and feel closer to God. When finally asked to sing at a church meeting I was terrified as I was beaten down my whole life and had absolutely no desire to get up in front of a bunch of people.
When I sang though it was like God just permeated the atmosphere and everyone was aware of it. I was baffled and a little embarrassed but I went on into over thirty years of singing in various Christian gatherings.
After taking that on as my identity and security and self-worth though - the anointing wasn't nearly as strong as in the early days. Yet - I would hear 2nd hand reports from friends talking to those who were around in the early days "When he opens his mouth the presence of God fills the room".
My current friends however were aware that it wasn't the case anymore as I had more than my share of worship services that had 'bombed'
That's when I realized that in my early innocence and closet fasting (and insecurity) God had indeed 'rewarded me openly'. As I grew more 'professional' in my approach - I HAD my reward (technically correct but 'dead' worship services)