This is not a vent board or any other kind of therapy. Before you hit the POST button, ask yourself if your contribution will add to the level of discussion going on.
Important notes on articles:
As my wife is a Realtor, I was responding with a long by BacTien
winded example laden response but I figured I would cut it to the quick. You can do a lot of things yourself. Roof the house. Cut your hair. Repair your car. Build a deck. Install a furnace. And so on. If you know what your are doing, you should be fine. If you don't know and if it isn't a dangerous situation (failing to hook gas lines to the furnace properly) you will probably still be fine. If you screw it up and the deck collapses, well, you're out a few thou and whatever damages your guests received when the dang thing gave way.
However, for what is most likely the most expensive purchase a person can make in their life, buying or selling a house. It is best to hire a pro. Buying or selling a house is something you do usually only a few times and thus don't develop any real expertise.
Mrs. BT has even helped folks constructing new homes. It costs her client nothing as the contractor pays her a fee.
Is a Realtor worth it? Not all of them, but Mrs. BT is, or so say many of her clients including one who sent a hundred dollar gift card thanking her for all her help and effort...and they bought a house in another town from another Realtor.