Please understand...Christ took your sins upon Himself. He paid for every one of them. Past, present, future.
When you truly believe that.... you will be so amazed and so grateful that you will have no desire to hurt Him or sin against Him and certainly never use that fact to live or practice sin.
You will want to get as close to Lord Jesus Christ as you possibly can and stay there at His feet. The Lord wants a personal relationship with you. Dare to live now as if you have been forgiven and as if the Lord is your very nearest and dearest friend, brother, your All and All. Study the gospel of John and ask the Lord to reveal Himself to you.
1 John 1:9 If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.