My biggest hurtle is trying to not to try so hard. After stumbeling/crashing through extract, all grain, kegging and all that, I'm finally now chilling my dill with extract and steeping while trying to do the essentials. To me the essentials are: clean buckets, good pitching/fermenting temps (I take all the time I need to cool the beer down for a good pitching temp) and patience.
I remember doing an experiment to compare agave syrup to maple. I split a batch and left them ferment in a room with open windows while Boston had a heat wave; those beers turned into rocket fuel. It was shortly after that I was reading an interview where Jamil Zainasheff, talked about how pitching and fermentation temps made the beer. It was a real simple focus that made my future beers -no matter how difficult/extravagant I made the process- better.
If I do those things and my recipe isn't too "experimental", chances are the beer is going to be great.