Can I change my feeling of being worthless to everyone?

I'm sorry to hear you're feeling this intense emotion of worthlessness.  I'm glad to hear this has not reached the point of suicidal ideation; however, it does sounds like you could use some additional support right now.  I would recommend seeking out counseling to help you challenge the negative beliefs you have about yourself.  Although many types of therapy would be helpful, cognitive-behavioral therapy has been shown to be a good approach for this type of struggle.  A CBT therapist can help you identify your negative thoughts and beliefs, figure out the ways your thoughts are being distorted (for example, all-or-nothing thinking, or discounting the positives about yourself), and reframe your thoughts to be more positive.  You might also consider EMDR therapy, which helps the brain reprocess traumatic or distressing memories and helps you move forward with more positive beliefs about yourself.  Best wishes!