A very important part of "dealing with stress" is this one:
KNOW WHAT YOU ARE TRYING TO ACCOMPLISH.
We get so stressed out because we have so many things on our plate and we easily get overwhelmed with the pressure this brings along. However, if we focus on the one thing that is most important, we'll be able to accomplish everything else more efficiently. We're trying to please God - that's our number one priority and that's what we should be focusing on accomplishing. Jesus knew what He was trying to accomplish and this kept Him focused on what was most important rather than being stressed out by other things.