A lot of people bought property as an 'investment' the last time 'round the bubble using the "leverage everything possible to buy everything possible" mentality because everyone KNEW that REI was the way to get rich, and that the markets were only going to go up forever.

Thankfully, my private lender shared this same mentality.

I have been using the vinyl plank flooring from Home Depot in homes I'm renovating for a company that provides housing for mentally disabled.

It can strain you mentally but in general all of my portfolio has been a success aside from one. 

That is a home owners mentality.

I have to be comfortable renting to the people that live in the area (I don't care about race, family type, sexuality, I'm talking about the war zone personalities/mentalities).Anything that meets to above criteria I want to keep as a rental.

I also have partnered with the local county programs for adult mentally handicapped tenants.

I look back at it as a great decision.Selling it cut my looses in a declining marketIt was a mental relief to get rid of the problem.

My stress levels went way down and I feel so much better physically and mentally.

Although he is likely mentally unbalanced he will simply move since all his threats are posturing in a attempt to intimidate, and seems to have had a effect.Get rid of him asap for the sake of your tenants.