How do I train my brain to see deals differently???

[John Carpenter]

This is a real example
usually every year I run across a truck or boats travel trailers heavy equipment or parts or other things
like somone mentions something they need and I hunt around and try doubling money orat least getting ahead afew bucks
I did if I remember right five or six in a row all good
So Wife wanted to use her money to play
My wife and I have several lots at a nearby lake ,a lady we were talking to was telling us she let her brother stay a while in her mobile home there and she finally got him out..it's a mess .. The electric was off ...And she said she was going to have to get another mobile and move it in . Other is a pigsty and really stinks
I wanted to see it She wouldn't go inside but let us look in it. Rotten food in the fridge dried dog poop and fleas .all furniture ect .. I asked what she would take for it .
she said $2800 was still owed ,we talked awhile and She wanted it gone .
I finally asked what her bottom dollar was she replyed if we could move it out in the next two weeks she would take $600
My wife said she wanted it
several days pass ,seller paid it off.I had tag agent check title had to get back with lady and get lein off title faxed to tag agent
then I called county about back taxes interest or penaltys she was current
Arranged to move it buddy said he would for only$400 on tuesday If ready to haul
wife's brother was looking for a MH wife showed him outside of it and said needs clean up
We know tag agent , wife has seller sign title and brother is purchaser , wife sells to her brother for $3000 and he paid $450 to move
Wife at the time thought this was a good deal
I kind of did thinking she made money not lost
But I kind of wanted to clean it up and rent it, or sell it
Thought about selling it with the lake lots $2000 or so down and monthly payments
But this was her very first deal ! So she did what she wanted to

We have done afew other deals like this usually double up nothing big
How do we change our thinking and break into bigger deals

is it because the little stuff doesn't scare us or
that's what I am in the habit of finding?
We seem to grab for the quick and easy but its the small amounts and its like I'm happy if I pick up a few hundred
it's like my brain is wired wrong

then again it could be that I kind of know what I can get for this boat or tractor (or what ever)and wife is catching the bug
And on bigger things I have to use the W.A.G method

I am kind of stumped on how they figure values on a lot of property's to me it seems like a lot of homes in the 210/240 range I personally think are not worth a penny over 160
Maybe I should just play some with mobiles and the cheap fixers at first

Maybe a BRAIN TRANSPLANT!
Any donors available???