When Jesus was baptized the bible says God said “this is my son, with whom I am well pleased listen to Him.” and the Spirit descended upon Him.
Jesus said this (paraphrased): “not my will be done but the Father’s” and the the “Father and I are one.”
Before He left and ascended He said “I leave you a helper.”
This helper is the Holy Spirit and that Spirit descended upon the apostles so they were filled with the Spirit and could drive out demons, heal and speak in tongues.
Jesus’ physical body was human but He was fully God too; the apostle were like Him in that they could perform similar miracles.
We’re taught that we are sealed with the Spirit upon confirmation. Each of us who are confirmed have that Spirit and thus are “like gods” as referenced in Genesis.
If we think of ourselves as vessels which can be filled with greater degrees of Spirit than someone newly in the Spirit may have only a little seed but Jesus was filled completely and therefore He will was God’s will.
Could a mortal be like Jesus and if so are we then too like God as our will becomes God’s will? God is everything so we could be a minute, infinitesimal part of God and therefore doing His will, like God.
Can we increase or be in His will more through bearing our cross and denying ourselves daily; through Eucharistic adoration, the Sacraments, Confession, etc.? Yes, I believe we could.
I can think or envision that there could be millions maybe billions of Spirits moving about here on earth like God and if we all moved as God moves and according to His will how could His will and peace not be found here on earth?