My situation; I made some stupid mistakes last year with my trucking company and am still working on recovering from that.

Buyers make the mistake of trusting the "expert" because of their ad in the glossy magazine and don't go and see what the property they are buying, or at least hire an independent inspector to give them accurate information.

I made some mistakes last year with my trucking business but I have learned a lot.

This year, the Birmingham Division made a mistake in their newspaper notices and had to postpone the auction. 

You can hear real-world examples of how others have built their investment portfolio and (hopefully) learn to avoid their mistakes.4.

I consider my decision to buy warranties many years ago as the single worst mistake I've made as a REI. 

That's the thing about Bull Markets they hide peoples mistakes and make them think they know what they are doing.  

It is a mistake to settle for the least expensive-there is a reason why they can do it for less.

Probably my first mistake right there..

I heard it better explained that it is a mistake to diversify simply for the purpose of diversifying.