In theology a person is an individual substance of a rational nature and so the Holy Spirit is a person, it is of the same essence of God The Father and of God The Son, it is the same Divine Essence, the same Divinity therefore it is God but it has its own intellect and will.
A careful study of the Holy Scriptures perfectly shows that the Holy Spirit speaks, the Holy Spirit says, the Holy Spirit prevented Paul from going to Asia (Acts 16: 6), the Holy Spirit moves into action, the Holy Spirit is saddened…. the Holy Spirit is quoted in dozens of texts in specific action cleary proving that He is a rational person with an intellect.
A person is a substance with a will and an intellect with a rational nature is the same difference between a human person and an animal: we would never say that an animal is a person because, although it has some instinct and even feelings,it doesn’t has an intellect nor a rationality and neither an intelligent will. An animal doesn’t reflect upon itself. Most animals don’t even know that they are their own entity: a cat may mistake his own image for another cat in the mirror they don’t have this intellectual concept of their individuality, they don’t have a will, they don’t plan the future as we do, they don’t worry, they don’t study, they don’t rationalize as we do that’s why we do not consider animals as “persons”.
Yes they do have a body therefore having a body doesn’t define a person, having an intellect and a will does.
Likewise, angels are persons. Every single angel is an individual person.
Also God is one God ,only one Divine Essence, only one Divine Nature, it’s not three Gods, there is ONLY ONE GOD but in three persons:
God The Father, God The Son and God The Holy Spirit do have their own individualities within the Holy Trinity and this Divine Holy Family forms the Family we are called to belong to, to be Sons and Daughters of the Holy Trinity. They become hosts of our souls and we are to receive the Holy Trinity inside the temple of our body, blood soul and humanity. Inside each of our own human inner personal universe, we are to receive the Holy Trinity as a guest into our souls.
SEE SECTION ON “THE HOLY TRINITY” AND ARTICLES “DEFINITION OF A PERSON” – https://www.catholicculture.org/culture/library/dictionary/index.cfm?id=35539&randomterm=false#:~:text=AND https://www.newadvent.org/cathen/11726a.htm
We get to pray for the Holy Spirit to come, to enlighten us, to guide us, to impart to us His 7 gifts as recorded in Isaiah 11:1 -3. The seven gifts of the Holy Spirit are, according to the Catholic Tradition: wisdom, understanding, counsel, fortitude, knowledge, piety, and fear of God. Starting to develop a personal relationship with God The Holy Spirit adds a whole other dimension in our relationship with God!!!
SEE ARTICLES “The Seven Gifts of the Holy Spirit – What are the seven gifts of the Holy Spirit, and why do they matter?” https://www.catholic.com/magazine/print-edition/the-seven-gifts-of-the-holy-spirit AND https://en.wikipedia.org/wiki/Seven_gifts_of_the_Holy_Spirit#:~:text=