The Lord never asks you to do the possible.
He is the God of the impossible.
Soldier of The Cross, make sure you do not fall into the trap of evaluating the job God has given you. You do not have that capacity.
He has called us to follow Him no matter what- He has not called us to follow according to our limited concepts or experiences.
Those who are His are always on the cusp of an infinite frontier. There is no limit to what He can do.
Soldier, tell Him He can do anything with your life. With your time. With your faculties.
Invest in eternity.
There is nothing else.