I need some tips on how to get rid of feelings of worthlessness?

Therapy, actually: Psychotherapy may be very helpful to you, since it will help address the cause of these feelings as well as help you heal them. Such feelings can come from past trauma or abuse, depression, or simply not being supported while growing up. On your own you can set small goals and create steps to meet them. Following through with your own plans like this can increase your confidence ; self-respect.