Your best bet is to have strong protection and clean any negativity before it has a chance to manifest. At the same time, you should not fear stressful experiences, as sometimes they happen, simply due to the nature of our karma, both as individuals and as a planet.
If you have really bad transits, or if you have bad karma manifesting, then this is likely cause an unpleasant situation, although it will be much more manageable with your AOP. However, just make sure this does not make you freak out; as things do not need to be perfect. Sometimes negativity serves to us as a means to learn, too, as otherwise we would never know that something was actually bad for us.
To "totally disable" requires immense amount of advancement, no less than fully ascended Kundalini. Before that point we can manage and mitigate issues.