"It was like having a burden lifted off of my shoulders," is a common description from people after they come to Christ.
Years ago I received a letter from a girl, who explained that she became sexually involved as a young girl. Soon she got pregnant and had an abortion. She explained how she then married, but now finds herself in a marriage that is falling apart. Her life was empty and she was facing guilt over her abortion. But then she heard the gospel. She said, "It was as if a big, huge stone had been lifted from off my back."
That's such an accurate description of what Christ accomplishes when we confess Him as Savior. No matter what you have done. No matter what sins you have committed. Jesus Christ is ready to forgive you and let you into heaven. None of us deserve it, but He has saved us anyway. His offer of eternal salvation is there for you, if only you will come to Him.