The gospel of Christ is not about fixing or reforming one's life
The gospel of Christ is not about fixing or reforming one's life: it's about transforming peoples lives, by securing their eternal destination.
"And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God. Which is that, "all men be saved, and come unto the knowledge of the truth." (Romans 12:2; 1 Timothy 2:4).
The first thing is to be saved, and the only thing that can save anybody today is the gospel of Christ, "for it is the power of God unto salvation, to everyone that believeth" (Romans 1:16).
The gospel doesn't say to "ask Jesus into your heart," or promise anyone a wonderful life if they do this.
The gospel says, "For all have sinned and come short of the glory of God" but, "Christ died for our sins, and was raised again for our justification, and If thou shalt confess with thy mouth the Lord Jesus, and believe in thine heart that God hath raised him from the dead, thou shalt be saved
Call upon the name of the Lord, and thou shalt be saved, believe on the Lord Jesus Christ and thou shalt be saved" (1 Cor. 15: 3; Romans 3:23; 10:9,13: Acts 16:31).
The promise to those who do this (believe/have faith) is that God's righteousness will be imputed to their account, and with this they will receive the gift of eternal life (Romans 4:6,8; 6:23). If you have not done this, why not now?