I guess it all depends on your threshold for pain - if you could really talk to this guy and work things out , then it may be salvagable    - perhaps he just got though dealing with some major life issues and took it out on you - just remember - this guy is living in your property and you have to keep dealing with him on a regular basis - the property management industry can be better defined as a "people management" industry - so it may be good to learn how to deal with these type of situations so that you can get a thick skin  - personally , having dealt with problem tenants and with ideal tenants - I would choose the temporary loss of replacing a bad tenant with a good one any day of the week, cause there is really no way to quantify the piece of mind that comes with having and excellent tenant vs the anxiety of dealing with someone unstable

House prices approaching 2006 levels, stock market unstable, battling against all cash buyers bidding over asking price...

It's not that they're dangerous or some super savvy criminals, but it's just that when backed into a corner, people without life skills are going to be unstable.

A block wall isn't designed to handle something like that and you couldn't have picked a much worse spot to take a huge chunk out of it as you now have two entire unstable walls.

Whether things stay stable or get unstable, there are opportunities either way. 

If the income is new meaning tenants have been paying only say under 6 months then you really can't count the income stream as it is unstable.

I don't think there's any way to keep guns out of the hands of those who are unstable in this country.

The entire rear addition is unstable and needs to be removed/replaced  (about an 8-foot deep wood staircase with landings and entrances to each of the 4 units, plus extra space for ~60 SF per unit).

For people that ask to be removed (and may be a bit "unstable") we just delete those.

You honestly dont understand that some places are nearly unrentable, extremely unstable, excessively crime ridden with wide pools of potentially horrible renters?