I won't lie. It's very hard to get an agent. Or, at least, a good agent. But then, what about this industry is easy? Not a lot. Anything worth having is something you have to fight for.
So, no, it might not be an easy task. But it's something to keep at. Keep trying and researching. And if you make a sale on your own, go back and talk to the agents you respect most and ask them to help you negotiate the contract.
Honestly, the most important tool I have (aside from the books I write) is my agent. She's more than worth her 15%.