Soldier of The Cross, you must govern your thoughts.
We are told to take every thought captive and lead it away.
We are destroying sophisticated arguments and every exalted and proud thing that sets itself up against the [true] knowledge of God, and we are taking every thought and purpose captive to the obedience of Christ,
II Corinthians 10:5 (Amplified Bible)
Most Christians are not aware of their own thoughts. It is critical to be constantly in the Word, so as to have His thoughts foremost in your mind. This is a matter that is changed by prayer
Oh Soldier! You have decided to really take up The Cross and follow Him. That means the most basic of issues decide all else.
There is nothing else. We are preparing for eternity, and He wants us to have a Now life of release and joy.
That means a thought life that is governed according to His Word.
Tell Him today.