From my point of view:
1) survival
2) do something good to satisfy your inner soul and for others.
3) help to continue the race of human being (i.e. reproduce yourself successfully)
4) and die
I struck off "survival" as I see it as part of successfully reproducing yourself. Once that is accomplished, no matter how long it takes, any life form usually dies. I really doubt that life forms where individuals live longer (i.e. "better at survival") are necessarily "better at life" than others.
I struck off "doing something good" as I really don't think nature (or God, or whatever you want to call it) cares about the well-being of any form of life per se. Usually, things that are helpful for accomplishing your mission of reproducing yourself successfully will feel good and what is not will feel bad, i.e. basic Darwinism stuff. Thus - like survival - "doing something good" is really part of the true mission in your life: reproduce yourself successfully.