Gino,
 
None of us can be "worthy of Christ" unless we do what He says. (Matthew 10:37,38)  But all of us, who accept Christ as our Savior, are made worthy of heaven.
 
Being faithful is up to us but....when we do sin we have an advocate and He is faithful and just to forgive us of all our unrighteousness.

Forgetting the past....Press on my friend towards the goal of God's highest calling for you in Christ Jesus. Whatever His plan is for you... accept joyfully  as we are not only called to live for Christ but also to suffer for Him... if need be.  We are in this fight together and God will decide the fate of each of us.  (Philippians 1:29,30)

Be encouraged brother and live for Christ.  Whether we live or die... it's all for Christ and God's glory!