Retiring altogether is the best option, but doing something else might be worth it for my own mental health.I thought about getting into the property management side of things for other investors because I have so much experience on that side of things, but I really have no idea how to even start with that. 

The law requires disabled persons to have a minimum 30-day relationship with their licensed mental health professional (LMHP), who must be certified to practice in California.  

Be prepared with the mentality that anything that can go wrong will go wrong.

I am in Alaska, the dark winters just aren't manageable for me anymore so I decide for mental health reasons its best to relocate.

We partner with a lot of organizations that help certain individuals whether it be re entry programs, addiction programs, section 8, mental health organizations etc. with that a large number of our residents receive some type of subsidy and most are not section 8.

Quote from @Samuel Mutschler: This is mental illness, substance abuse, or someone trying to get out of their lease.I would tell them the rental is unsafe and they should leave.

I was recently involved in a thread where the OP was almost radical in her dedication to her short-term $savings at the expense of long term gain, and yet was bemoaning having had a mentally unstable tenant turn vicious on her.If you "face the beast" you must expect to be battered mercilessly at some point.

Is he mentally disabled ?  

It was minor so I just made a mental note.

Simple solution: Inform them that unfortunately you can’t accept ESA letters without being able to verify the validity of the letter by speaking with the local licensed mental health professional who prescribed them their ESA, so that you can verify that they have a legitimate disability requiring an ESA as well as that whoever prescribed it to them is a real licensed mental health professional who has an ongoing relationship with them beyond just receiving a one-time payment to “prescribe” the ESA.