The one baptism is the water baptism in the name of the Lord Jesus. You sound as if you do not want the Spirit baptism. You don't want God in your life.
When scripture has "baptise" and "baptism" in a passage it ought to be the normal and natural reading to take it as a reference to water washing as the sacramental sign of washing away sins and receiving the Holy Spirit because that is how Jesus Christ described the new birth to Nicodemus and how saints Peter and Paul write about baptism.
Nowadays, with Pentecostal ideas abounding it is common for professing Christians who are influenced by Pentecostal teaching and terminology to treat baptism as two very different things. It is the reverse of bifurcation in argument. It is taking one word and making it mean two completely distinct and different things in a system of theology that lays emphasis on personal feelings and experiences.
Scripture, however does not lay great emphasis on two separate baptisms, it lays emphasis on baptism as a unifying sacrament that helps to form the unity of Christians in the body of Christ. That is why saint Paul - when discussing the body of Christ and the variety of people and gifts that people receive - writes these words:
Now concerning spiritual things, I do not want you to be ignorant, brothers. You know that when you were Gentiles, you approached mute idols, doing what you were led to do. Because of this, I would have you know that no one speaking in the Spirit of God utters a curse against Jesus. And no one is able to say that Jesus is Lord, except in the Holy Spirit. Truly, there are diverse graces, but the same Spirit. And there are diverse ministries, but the same Lord. And there are diverse works, but the same God, who works everything in everyone. However, the manifestation of the Spirit is given to each one toward what is beneficial. Certainly, to one, through the Spirit, is given words of wisdom; but to another, according to the same Spirit, words of knowledge; to another, in the same Spirit, faith; to another, in the one Spirit, the gift of healing; to another, miraculous works; to another, prophecy; to another, the discernment of spirits; to another, different kinds of languages; to another, the interpretation of words. But one and the same Spirit works all these things, distributing to each one according to his will. For just as the body is one, and yet has many parts, so all the parts of the body, though they are many, are only one body. So also is Christ. And indeed, in one Spirit, we were all baptized into one body, whether Jews or Gentiles, whether servant or free. And we all drank in the one Spirit.
1 Corinthians 12:1-13
Saint Paul was not a modern-day Pentecostal theologian or pastor. HIs thinking is very unlike the gift-oriented theology of Pentecostal and Charismatic Christians today. Saint Paul thinks of baptism as unifying Christians in a common life in Christ as members (parts) of the body (church) which is in the world as well as redeemed in the heavens. This is why there is one baptism, it is because there is one body and one Lord. As saint Paul wrote in Ephesians chapter four (quoted in the original post).
