For those of you who would prefer to stick a big "TLDR" (too long, didn't read) on this, here's the short answer: There is none. No meaning to life. Sorry to dissappoint.

For those of you interested in reading the discourse, here you go.

First, there is no meaning to life, no matter how you try to decorate it. You can spend your entire life working to feed the poor tribes in Africa, and doing an admirable job, and there's still no meaning to your life. Jonas Salk, Johannes Kepler, Galileo Galilei, Neil Armstrong. Pick a human who has accomplished what the world would consider extraordinary feats. Again, no meaning at all.

Life is not something which can have meaning except by assignment. If you look at life as a series of accomplishments, there is still no meaning at the end. If, instead, it is a series of experiences, again, there is no meaning.

Meaning can only be assigned by the thetan. It only makes any sense in that context. The sixth dynamic doesn't care about it. The seventh doesn't really care either. The fourth may care, but in the case of the third and fourth, whatever meaning is assigned to one's life is assigned by them, not by you. The second doesn't really care about your life's meaning, either. Fifth, sorry.

The meaning of life may be of great importance to you, and you may spend hours trying to justify your life's meaning in terms of your accomplishments. And if you want to do that, it's fine. Teenagers and college students often go through a period of trying to figure out what they're doing here and why. They assign meaning and then judge the rest of their lives by how well they accomplished the doingnesses and havingnesses which might lead to such a meaning. All well and good. But all should remember this is an exercise you are performing yourself, for your own gratification.

It could be argued that at the end of your life (and perhaps throughout it) others will assign meaning to your life, which may or may not align with any meaning you've assigned. But the fact is, they will never see the majority of the actions you take on a day to day basis. They cannot truly see how well or poorly you accomplished the actions which contribute to the meaning of your life. They will simply never know. They will see a series of public actions (or not) and proceed from what they see. And in fact, a sort of "botch" could occur, where they see your public actions as reprehensible, while your private actions remain laudable and contributory to the meaning.

But no matter who's looking at it, including you, the assignment of meaning to your life is something you (and/or possibly others) do which may or may not have anything to do with what you do in life.

So how do you otherwise justify your own existence? You don't. There is no justification for you living or having lived. Life is a game. That's all. You are here to play it. You may win, you may lose. It doesn't matter. You are here to play. They probably forgot to tell you that when you slid out of the birth canal, but it's the bare truth. You may dictate the rules of the game for yourself to some extent. But that's up to you. The more money and power you have, the more you get to dictate the rules, which tells you why people with money and power do what they do. They want the chance to make the rules. They want to be more than simply the players of the game. They want to participate in its shaping as well.

Of course none of this need change your focus in life. As I said, if you prefer to assign meaning to your life, you can, and no one will argue with you. Probably. But it's useful to remember that whatever meaning is assigned was assigned by you. (You may also care about what meaning if any others give to your life. That's up to you as well. But your assignments will always be senior to theirs.

But in the end, the game is the thing. The rules don't matter, the goal doesn't matter. You're here to play, whatever the game is. It's also a comfort to realize that the game you play is more or less up to you. There are millions of games to play here in life. You're free to pick the ones you like.