Can I change my feeling of being worthless to everyone?

First of all, it’s a strength that you are openly seeking help for this problem.  As others have said, it would be best to get a therapist you can work with because as humans we heal in relationship with others.  Here are a few things I would explore and suggest working on:

1.) Questions to explore:  When did you start feeling worthless?  Why do you feel worthless?  What does it mean to be worthwhile?  Where are these beliefs coming from?  How are you measuring your worth? 

2.) Check the facts: are people TELLING you that you’re worthless or treating you like it?  If so, start setting some boundaries, communicating your feelings, and/or get those people out of your life.  Surround yourself with people who make you feel good.  If you believe you’re worthless even if you’re treated well by people you’re surrounded with then...

3.) start to challenge the belief that you’re worthless.  Start to cultivate the belief that you’re worthwhile regardless.  Is there any part of you that can believe it, even just a little bit?  Spend time focusing on this each and every day. 

4.) do things that help you build confidence and mastery.  Find something you enjoy and want to get better at or learn more about.  Invest time in learning a new skill and practice being patient with yourself.

5.) practice mindfulness.  That involves being non-judgmental and curious rather than criticizing yourself or emotions.  

6.) do something that makes you feel like you have a purpose- even if it’s small Iike visiting some lonely people at a nursing home or volunteering at an animal shelter.  It may seem small but it matters a great deal to the one you helped!

I wish you all the hope, healing, and happiness you deserve!