Ask HN: Best way to share your experiences as a founder/business owner?

I usually don't like to do the whole "influencer" thing (cringe) but I do appreciate seeing people who share their wisdom and experiences online.

I have been a founder/business owner for 8 years and learned so many valuable lessons and would love to share with others. I know I could do it through a blog, tweet, youtube etc. But I have a big mental block on how to do this without much thinking.

I am not diagnosed medically but I seriously think I have ADHD and my mind just wanders around a lot when it comes to doing things that I technically don't have to.

Is "Just start" the answer or are there any specific things that I could try to hopefully give back more to the community ?