Our sins can be forgiven if we follow what is stated in John 3:36 - "The one who exercises faith in the Son has everlasting life, the one who disobeys the the Son will not see life, but the wrath of God remains upon him."
Exercising faith in Jesus ransom sacrifice is vital if we are to gain forgiveness for our sins, but it does not stop there. Hebrews 5:9 states: "And after he had been made perfect, he became responsible for everlasting salvation to all those obeying him."
In order to gain forgiveness believing is not enough we must also be obedient to Jesus commands and teachings. We must put an earnest effort to stop the act that we are doing that is displeasing to his Father Jehovah. 1 Peter 2:24 states : "He himself bore our sins in his own body on the stake, so that we might die to sins and live to righteousness...."
In other words after everything that Jehovah and his Son Jesus has done for us we should work hard to overcome sinful tendencies and we would never want to do anything deliberately that would go against his standards. What future blessings await us if we do this> Visit www.jw.org to learn more.