[anonymouskimmer]

Except for the last two sentences, this seems like a non sequitur. It conflates value of one's self (meaning of life) with action by one's self (mission in life). The question was not "what's the meaning of what I do", but rather "what's the meaning of me". And the horrible corollary in this conflation yields "your life has no meaning" when you stop acting. "May as well pull the plug, as he has locked-in syndrome."

[nine_k]

The concept of self in general is a bit of exaggeration, and an immutable self that represents a person all their life is even more of an illusion.

If the self stayed unchanged, people won't even be able to develop through their lives, which is demonstrably not so.

So, with the "self", changes the idea of a meaning of life that appeals to that "self".

[anonymouskimmer]

Sure. Here I just meant it to be the being that is currently experiencing one's own existence.