Please understand I sleep well at night, this doesn’t keep me up, I just like to tighten loose ends just in case.

Sometimes all you need is less than a quarter turn with a screwdriver to tighten things back up.

It's really hard and it was a strain on my marriage.

Didn't tighten enough a supply hose or nicked the dishwasher hose accidentally?  

Doing business with a friend can strain the relationship.

This is just a cost of doing business -- and hopefully a minor one at that.If a lender believes so many loans are falling through that they must enact punitive restrictions in their loan process, like charging up-front fees before closing, I’d suggest they tighten their marketing up to attract more suitable prospects.

On my way home just now my car was sounding funny, straining up the hills.

I already had a 3-family in the city and saw inventory tightening.

 I have also noticed that Airbnb is tightening their protocol for pain damage claims.

Personally, I would tighten up your background checks, which will not solve all problems or find all problem tenants, but it will minimize the chances of this happening again.