Mistakes: we all make them.
Don’t dwell on them. Be it a poor swim, a slow transition, poor nutrition, analyze it, and table it. Use it and move on.
Mistakes are a great way to learn and to improve. Use them to make gains next time.
Give yourself a break, don’t be too negative. Know that as we push ourselves to the next level we often have to take one step back to earn the two steps forward.
There will be down days as you push yourself towards your goals, but remind yourself that you pick up speed on every downhill.