Another key to making the most of our campaigns is to go the extra step that your competition will not. If 2 people are equally matched (financially, experience, etc) - who do you think will most likely make more from a campaign? Someone who knows the niche inside and out? Or someone who doesn't care about the niche and just wants to make a buck?
Now, how did I find this simple piece of advice out? When I bought my first house a few years ago, I spent weeks learning all the information that I needed (and didn't need) to know. After this I modified a few of my campaigns in the financial niche and I saw a nice increase in profits. From there I made it my goal to start doing this for more of my campaigns and low and behold each campaign I did this with, I was able to increase my EPC and profit. Now every new campaign I take this approach and it has worked very well for me.
Again, it seems so simple, but often overlooked.