In a similar vein as brown, dont feel you need to rush all the time. You're not in an episode of ER and the vast majority of pts are not as time critical as you think they will be. Honestly, I sit down at maybe 60% of jobs I go to working as a paramedic in a 000 (911) system, for the same reason we never run. You can't help someone if you're more flustered than they are. Slow and steady wins the race. Take your time figure out whats wrong with your patient and importantly, what your patient and family actually wants out of your attendance. The job is like 90% talking.
"Amateurs discuss strategy; experts discuss logistics" (I will award the sum of 1000 internets to the super awesome podcaster who quoted Napoleon to make a similar point). Its really important to know what kinds of treatments are appropriate for what disease processes but its also important to know how you are going to deliver these in the real world. Early on I was getting too stuck in the moment and forgetting to plan ahead. So my CI helped devise this strategy. If you think about what your pt will need in 5 minutes and 15 minutes (and what you will need to deliver that to your pt) every 15 mins or so, then it helps you to not get too stuck in the moment, you always feel like you're 5 steps ahead of the game, and you get a whole lot less surprises.