In the grand tradition of sequences, I'm going to jot this down real quick because it's required for the next argument I'm going to make.

Shalmanese's 3rd law is "Any sufficiently advanced wisdom is indistinguishable from bullshit". Shalmanese's first law is "As the length of any discussion involving the metric system approaches infinity, the likelihood approaches 1 of there being a reference to The Simpsons episode about 40 rods to the hogshead" so judge it by the company it keeps.

Imagine you got to travel back in time to meet yourself from 10 years ago and impart as much wisdom as possible on your past-self in 6 hours. You're bound by the Time Enforcement Committee not to reveal that you are the future-self of your past-self and it never occurs to your past-self that this ugly thing in front of them could ever be you. As far as the past-self is concerned, it's just a moderately interesting person they're having a conversation with.

There would be 3 broad sets that your discussions would fall in: Beliefs that you both mutually agree on, Beliefs that you are able to convince your past-self through reason and Beliefs which make the past-self regard your future-self as being actively stupid for holding. It's this third category which I'm going to term Advanced Wisdom.