Don't let emotions get in the way of making practical decisions.

This is an emotional roller coaster for borrowers, but it is something you should review with them and evaluate their finances to determine why they are behind, and if they are - can they come back on this or they just kicking the can down the road?

I am going to target new builds in the future because the seller has less of an emotional tie to the property.

All of my investing has been fraught with emotional drama.

My advice would be to not buy with any emotion. 

In most cases you cannot charge two different tenants for the same time period (double dip).Pet fees/pet rent: Local laws vary, but there are often addiitonal deposits, fees, or rent for allowing pets that don't qualify as service animals or emotional support animals.

How can I keep my emotions in check and treat this like a business?

Real estate can be emotional and you want to make sure you keep emotions out as much as possible so you can think clearly about your options.

Yep, hands on local like you are doing is the way to go IMO ... if you are willing and able, have the funds, and have the discipline to NOT pull the trigger on anything that isn't a great deal.

The emotional ups and downs involved in evictions and collections are truly unique.