I can't do that with my stocks or do anything myself to influence its value.

Better yet, accept the fact that there are always going to be the poor, and a good number of these people - especially in class-movable societies like the US - are going to be there because they aren't motivated enough to do anything further. 

Pretty much everything I have seen and read is:Find out the sellers motivation/problem and speak to solving that issue.Give an offer but explain how you got your numbers.Other than that, it seems pretty limited for negotiating information. 

I think the motivation there is to keep the tenant renewing. 

Being miserable at your job is one of the best motivators I can think of. 

This will heavily influence the best strategy for you.

You will want to be motivated and make consistent progress.  

I set up my daily time blocks on GC and watch the ted line steal my day away for motivation.

Also, what was your motivation in purchasing?  

Define your motives, and run with it.