I had literally five friends/relatives call me in one day asking for freebies. Five. I was talking to one relative when another called me, I saw the call waiting, then it stopped beeping and they then immediately called my wife's phone. It was ridiculous.
I had one that needed almost $500 in parts total replaced.. I told them what parts to buy, where to buy them, the part numbers, etc. They wanted me to front the money and buy the parts myself, then they would pay me back after it was done. I told them to send me or paypal the money so I could go get the parts, I wasn't fronting that kind of money. They boo-hoo'd me, they didnt have enough and it was going to have to be two different payments spread out over their next two paychecks, etc etc. I nope'd my way out of that repair in a hurry.
My own sister, who makes slightly less than double what I make, got quite forceful in trying to have me delay leaving on our Florida vacation by a day so that I could spend that Friday repairing her brakes instead of her going to the local Toyota dealer to get them done in a hurry. Sorry sister, not happening. Expletives flew wild during that phone call, many from her, most from me.
About two days later my wife went on to Facebook, and posted a long winded "My husband is not your personal mechanic. He doesn't work for free, he doesn't work on his day off, and we are not your bank" kind of post and said "he's not working on your cars anymore. He's done. Call someone else, I don't care who." I wasn't even aware she had made the post and I almost died when I read it. The phone calls stopped immediately. A couple people made some pissy comments. A few gave it a thumbs up. Anyway, it worked.
I work on my two kid's cars and my 89 year old dad's car. Nobody elses. Period.
If you have a skill like working on cars, doing plumbing, electrical, roofing, computers, whatever...you'll quickly find who the leeches are in your life.