Please don't. You have value, even if you can't see it right now.
Have you considered why you might be feeling this way? Have you tried talking to someone? I know it may seem hard, but the fact that you posted on here just shows that somewhere deep down you know you're a fighter. You can do this.
Please, please, please consider talking to a professional, or contact
one of these hotlines ASAP. Depending on your country I can also direct you to an online chat with a professional in case you don't feel comfortable on the phone.
If you just want to vent, we're here for you & we won't judge you.