It's hard to enforce rules when there is an additional emotional connection.

I have stopped answering phone calls and resorted only to written communication (for my records) but have noticed a pattern of very emotional and aggressive behavior from this tenant (as well as extremely unreasonable expectations about what the timeline is to have something fixed).

If the current tenant has rented that unit for awhile, they might have an emotional attachment to it so me pulling one behind their back wouldn't be fair to them nor would it make my reputation good in the area. 

Coffee is going to over personalize a situation where a person is MOST likely to use personal emotions against you.Late rent needs to be dealt with firm, fair, and expediently.

You're being outbid by either 1) other investors who are more focused on appreciation than cash flow or 2) retail buyers who are using way more emotion than fiscal analysis.Two things to consider:Look in other areas where there's a better relation between rents and price.Consider 5+ properties where the value is driven by income.

And last...avoid small coops as things can get very emotional...p.s - There are few coops which allow subletting from day 1 but they really hard to find...Came across some a while back in the UES and Inwood.Hope that help.

Start the eviction immediately otherwise you will weaken your position.

So you will definitely have to be patient and not let your emotions get the best of you.

Your post sounds like you're just focused on the emotions of it, which are totally understandable, but you're busy blaming everyone else.

Plus people criticize you and you place every day which gets emotionally tiring.There are not enough full service management companies doing a decent job.