Plenty of people do "for sale by owners" successfully, but things can also go wrong.
I'm an agent, and my tip would be to research and then hire a really good, seasoned agent. That's not necessarily the biggest seller in your area, but someone sharp, resourceful and hardworking. They know the market, the contracts, etc. They should be able to keep you out of trouble and keep the sale moving along smoothly. They should be a real asset to your sale. There's a point in nearly every deal where the going gets tough. It's helpful to have a 3rd party negotiator working for your interests, explaining alternatives, minimizing your costs, holding costs and expenditures, and making sure that you're covering your rear. That's what a good agent should do.
I think the hardest part is finding the gem that is a good fit for you. Ask your friends or neighbors if they have a referral or have used one in the past, and what they thought. Did everything go smoothly? Read Yelp and Zillow reviews. Don't be afraid to interview several or more. It should be a decision that feels good to you. Negotiate the commission rate. In my state, the commission paid by the seller is split between the buyers agent/broker and the sellers agent/broker.