I don't think that YHVH will burden anyone, anywhere, with more than they can do if they will pray, eat, and sleep appropriately, and keep right relationships in some balance with their mission.
We do not have the power to go on indefinately in our own strength, though we try it, and suffer the consequences.
In my case it was a 24/7 business tied to a 24/7 spouse.
Not healthy, particularly as the praying was very sporadic at that time, and the marriage an unequal one, broken by the burnout and loss of business.
For a Pastor, it would not be very different, except that hopefully he would marry within the faith, and his wife counsel him on not doing so much that the body gives out.
GinnyRose's position, of counselor to those who wish to shed innocent blood to save themselves to a worldly life, would be even harder than most burnout's, since the grief and mourning would be so heavy all the day.
Letting love grow cold in us as Believers is a characteristic of living too closely to the world, for our senses are dulled by the extent of the pain we witness, and to not feel that pain, we must pull back a little of the love, if we would maintain the closeness to the world, or begin limiting contact with the world until we have our spiritual and physical balance back.
I have not seen a Believer lacking the necessary anointing unless they try to go further than YHVH's purpose for them. Evidently the time when love grows cold is upon us, for if we turn to the world, we will love Yeshua the less.
The further we go from Adonai to the world, the less anointing we are enabled to receive to love others, unless we spend a good deal of our time in communion with Adonai that He may choose to continue the anointing.
GinnyRose is again a case in point, since she sensed the Ruach HaKodesh telling her to pull back, as the anointing on that ministry was being lifted, and she felt her own strength also dwindling amongst all that pain and rebellion.
If you will note, no one burn's out by God's purpose, but generally by going past their own strength when Adonai has already pulled the amount of supporting grace.
Q