Maybe some emotions if no one shows?

You're going to rehab and flip it anyway so don't get all emotional when you find out how disgusting people can be.

Lots of emotions in letting go of homes!!

@Jerome Foster yes Hi, I remember you!

So you can say "my kitchen must be kept kosher" and put some rules in place for that, but you cannot state "I only accept Jewish roommates".If you are allergic to pets, you may opt not to accept a roommate that requires a service dog or emotional support animal. 

As @Trevor S Foster mentioned, get educated on wholesaling and start to market to potentially motivated sellers through doorknocking, mailings, craigslist etc.My view on wholesaling is that you should not be trying to squeak out a fee on an MLS listed property, you should have an off market property locked down at a significant market discount due to your marketing and negotiation skills, then bring that to your buyer for a wholesale fee.I'm a Realtor, and I definitely don't see wholesaling as a niche where Realtors need to be involved.

Then you can put any negative emotions aside and develop systems, strategies, and skills to manage your property and people (screening, handy skills, good scripts for common issues etc)...Of course, some great tenants are just in an area a short time, choose to rent for other reasons, etc.

He missed on few offers as he became emotional as a seller and now he's been on the market over a year.I am a broker that has done over a thousand transactions and bought and sold multiple properties for myself and I still have someone else negotiate for me every time, as I would leave money on the table, or pass on good offers if left on my own.

@Dave Foster can you give some insight? 

Emotionally, it has provided many couples a sense of ownership and a place where they can start growing “deeper roots” or their children.