What does your current ministry pace look like? A constant sprint? An all out run? A steady jog? A power walk?
Whatever the pace...make sure it's sustainable. Make sure it will take you the distance.
You're are not called to run half your course...you're called to finish your course.
Over the years, I have seen many people start out in ministry at a pace that couldn't be maintained. Their heart was in the right place and they were full of zeal. But they didn't take the long look and pace themselves properly. Eventually, they fell out of the race.
I have found that finishing the race is not based on speed...it's based on maintaining a steady, sustainable pace.
Can you finish your course at your current ministry pace? If not...it's time to make some adjustments.