I had a friend post about whether or not a person could "not matter in this life."

I responded :
"Mathematically the effect can never be zero. Even a minor roll ha(s) an impact. With all things a persons life has, the minimal impact is literally helping a tree grow a little taller. There is no null value in this life. Don't let anything make you think you or anyone doesn't have an impact on this world. "In 900 plus years of life I have never met anyone not worth knowing." Doctor Who."

And yes I know that 10 - 10 = 0, but never can a human equal Zero.  We either have a positive impact or a negative one and that depends on how others receive you. Something you have a little contol over.

I know that some of us find ourselves doubting who we are or our own self worth.
Why question the fact that you're not making an impact; we all make an impact.  Why not question "How large of an impact you are having and is it enough for you?"