Well here is my buck fifty and change.
I've never had faith in anchoring. Decades ago when first introduced to sailing I questioned the whole concept. I would look down into the inky depths and ask my dad, "How do we know we won't drag?" his answer was basically, "We don't, it takes faith."
You don't have to have faith. Put the anchor down, set it, put engine in reverse at full power and if the anchor stays put that means you are not going to drag with less than 20K of wind. If it blows stronger and if you are not a believer (like me), organize an anchor watch.
If your crew is like mine you will find out they are all believers and that means you are going to sleep on the cockpit and from time to time you will have a look to see if the boat is still in the same spot. Don't worry, you will get used to it