The first is practicing what you're not good at. Ignoring techniques that that you find challenging mean certain defeat when an opponent tries it on you (whether they're aware that it's a weakness or not). Diversity is the key. Train against as many situations, styles and people as you can. Doing so will develop a delay in what I call in the "go moment" - which is the moment when your brain shuts off as you execute a technique, something that we trained in yesterday's High Performance Combat workshop(is it a plug if the event has already occurred?).
The other nugget is super important and outlines the need for training in some other way. The Art(s) that we practice hone a subset of our musculature which in the long run can do our bodies a lot of harm if we exclude balancing exercises from our overall practice. I mentioned it in passing in an earlier post.