It's not what you have done in the past that makes you worthy of being loved. The whole first part of my message was making the point that there are things that need to be forgiven in your life. Those things whisper to you that you may not be worthy of love. You can be sure the devil wants you to hear and believe that negative message. In the same way, it's not what you're doing now that makes you worthy of being loved.
Doubts can get in.
There's no certainty if you base your worthiness on what you've done or what you're doing now. Anyone with a conscience who does a little reflection will not always esteem himself very highly. Self-esteem based upon yourself is going to leave you feeling conflicted. Then there's the other side of the spectrum. Some Christians will say you are such a poor, miserable sinner you are not worthy of being loved.