Here is what you do:
First, look at what is actually real about your Catholic being - you were Baptized.
That means that we all consider and know you as one of us. So, the first thing you do is to acknowledge that we consider you Catholic.
You “feel” you are not, that you don’t sense it; but this first thing is for you to look at us - take it for fact that WE know you as one of us, as one of the Holy People on the earth.
We are like a nation of people, and you (in our understanding) are a citizen of this nation to us. As our fellow citizen, you have the same King that we know we have, you share the same heritage that we know, and you will share the same future we know as a people. As our nation goes, so you will go with us. Our nation is the Kingdom established by God when John baptized Jesus, and we know your baptism was your entrance also into this citizenship.
Know this: say the words, “I am baptized, a citizen, and member of this people”
Next, our purpose in this Kingdom - to be something in the world that cannot be in the world unless we do it: When you were baptized, though you cannot “feel it” is that you were given the Holy Spirit, with the Grace he gives by his presence. That “gift” is the Virtues. These Virtues are dispositions that are beyond natural dispositions to virtue. (Faith, Hope, Charity). You were not given “supernatural reason” but instead a “supernatural disposition” that you can use with reason. You were not given a “supernatural will to always will the right thing”, but you were given supernatural dispositions of Hope and Charity that you can use when willing things.
So, begin making use of the Virtues, the dispositions, you have been given: How? Dispositions can be used in absolutely everything you do: “I am going to drive virtuously to work”, “I am going to treat my wife/husband virtuously when we talk now”, “I am going to do this housecleaning virtuously”, “I am going to take this shower virtuously/get ready for work virtuously”, etc. Everything can be done differently, virtuously, because you have this gift of Grace, Sanctifying Grace, that makes everything you do virtuous, which means you yourself now with this Grace are virtuous.
Try it, using the gifts of the Spirit are where you will find you are amazing, spiritual, virtuous, good, just like your Father in heaven is good.
You will also find or come to understand that you are manifesting his Glory in the world, because the world will be seeing what God is like as they seeing you doing all things like Him.
You will also then find your prayer with God take on a new light - you will be talking with a “kindred Spirit” - A father’s child is like his father - so you will feel family when talking in prayer.
All the best, my fellow sojourner.
