I’ve always accepted that some things take time. In some cases, ideas are like time bombs and take a while to go off.
Many many people, not just gun people either, would greatly benefit from it.
An outline of the principles, called Dale Carnegie’s Secrets of Success, is available as a free download. I have a hard copy and refer to it regularly.
I receive no commission or other remuneration from recommending it, it’s just a wonderful resource for me that I like to share.