As a result, meeting the requirements to be considered  a real estate professional may proved to be difficult. 

Of course, you need a team in place and need to know how to do the math :) KNOW your numbers, if you're not sure how to do that, get to a local meeting, it's really not as difficult as many would make it seemGood luck 

in the market where multifamily cap rate is 4 to 5 even sometimes 3, it's difficult to be even breakeven.

Poor tenant quality and difficult to find a good PMI am sure there are good tenants and PM’s but it was not worth the time or effort for me

We have enough in our account and enough of an equity in our home where we could really start with any type of investment so that’s where it’s difficult to choose where to go. 

I am guessing this is the most difficult part, to find the right property and break even.

I feel those that were doing it for kindness was also doing it with naivety; they probably never foresaw a case where their kindness would make it difficult to sell their property at comp value.when rent control passes, rents go up.  

@Daniel Lozowy Mailers should work, but it is difficult to turn someone down quickly when you are face to face, eye to eye.

Interest rates are higher making it a bit more difficult to profit on an already expensive build.3. 

PInPoint was very unhappy and seemed like I made this very difficult.