Baptism is a step of faith between you & Lord Jesus ... you can do it on your own ... in a river, a lake, a pond or even under your shower.
As Jesus did (He set the example for ALL to follow) He went under the water, His old self (the carpenter) was left behind & as He came up Father anointed Him with His Holy Spirit .... He was a new creation .... the same thing happens when you make a heart commitment to Him.
As Paul said ...Gal 2:20 I have been crucified with Christ [in Him I have shared His crucifixion] ....{the "old self" has died with Jesus}; it is no longer I who live, but Christ (the Messiah) lives in me {a new creation}; and the life I now live in the body I live by faith in (by adherence to and reliance on and complete trust in) the Son of God, Who loved me and gave Himself up for me.
Born again believers have "earth suits" but Father, Lord Jesus & the Holy Spirit are in/with them 24/7.
Father supplies His Holy Spirit .... put Him on ....
Eph 6:10 In conclusion, be strong in the Lord [be empowered through your union with Him]; draw your strength from Him [that strength which His boundless might provides].
Eph 6:11 Put on God's whole armour [the armour of a heavy-armed soldier which God supplies], that you may be able successfully to stand up against [all] the strategies {and} the deceits of the devil.
Eph 6:12 For we are not wrestling with flesh and blood [contending only with physical opponents], but against the despotisms, against the powers, against [the master spirits who are] the world rulers of this present darkness, against the spirit forces of wickedness in the heavenly (supernatural) sphere.
Eph 6:13 Therefore put on God's complete armour, that you may be able to resist {and} stand your ground on the evil day [of danger], and, having done all [the crisis demands], to stand [firmly in your place].
Eph 6:14 Stand therefore [hold your ground], having tightened the belt of truth around your loins and having put on the breastplate of integrity {and} of moral rectitude {and} right standing with God,
Eph 6:15 And having shod your feet in preparation ...{having understanding} [to face the enemy with the firm-footed stability, the promptness, and the readiness produced by the good news] of the Gospel of peace.
Eph 6:16 Lift up over all the [covering] shield of saving faith, upon which you can quench all the flaming missiles of the wicked [one].
Eph 6:17 And take the helmet of salvation and the sword that the Spirit wields, which is the Word of God.
Plus we are commanded .... that IN THE SPIRIT
Eph 6:18 Pray at all times (on every occasion, in every season) in the Spirit, with all [manner of] prayer and entreaty. To that end keep alert and watch with strong purpose {and} perseverance, interceding in behalf of all the saints (God's consecrated people). (Joining with the Holy Spirit in intercession for all the saints Rom 8:27, 34)
The Holy Spirit is always ready for you ...
Rom 8:13 For if you live according to [the dictates of] the flesh, you will surely die. But if through the power of the [Holy] Spirit you are [habitually] putting to death (making extinct, deadening) the [evil] deeds prompted by the body, you shall [really and genuinely] live forever.
Rom 8:14 For all who are led by the Spirit of God are sons of God.
1 John 4:17 In this [union and communion with Him] love is brought to completion {and} attains perfection with us, that we may have confidence for the day of judgment [with assurance and boldness to face Him], because as He is, so are we in this world.
I liken it to as Christ Jesus taught in John 15 ... He is the True Vine, as soon as a person is drawn to Christ Jesus (John 6:44 No one is able to come to Me unless the Father Who sent Me attracts {and} draws him {and} gives him the desire to come to Me, and [then] I will raise him up [from the dead] at the last day.) Father (the Gardener) cuts us off the Adam vine (that is dead at the cross of Jesus) & trims us & then cuts Lord Jesus (the True Vine) & grafts us into HIM, then He binds us to Him with His Holy Spirit (the word Covenant means "to cut") ... we then are simply required to rest in Him. As He moment by moment supplies us with everything we need, we grow stronger & in time His fruit is produced on us .... for Father's glory --- Father & Lord Jesus are achieving Father's will through us (with Them in us) on earth ....... as He is, so are we in this world. (AS WE BELIEVE & TRUST IN HIM)