I have a travel plan that addresses the things that I have had to deal with when I travel. So, the things that challenge me are unexpected issues that pop up. I can only do the best that I can with these things at that moment. If I feel that this is likely to happen again, I work out a plan to deal with it before I travel again.
But even a great plan can’t cover everything. My advice for dealing with travel challenges is to not over react or get too stressed right from the start. Take a few breaths and think through the situation. Remember that you are a smart and capable professional. Stay calm and use your head.