Feeling like a bad coach

I recently became a life coach (not through LCS) and am still learning and growing in this.  There were moments (especially in the beginning) when I didn’t know much about how a coach should be and I felt like “Wow, I am so good”.  Now I think “I am bad; I don’t know how to help them” or “I am getting worse and worse”.  This thinking makes me want to drop this area of coaching and not coach at all.  I had the same thinking when I was teaching singing lessons.  I was fighting the thought  “I am so bad at this”.
Any help on that would be amazing.  Thank you.