Why I am part of the New Covenant

I am a part of the new covenant, I am still trying to bond with God more and I am still working on my sins. But I have accepted my life to Jesus in all my ways. I may still sin a lot but I am working on that also. I am also trying to pray more and trying to pay attention more. I also know that God will alaways keep his promises unlike us. This is why I am part of the new covenant.