(ill try to explain it rather than make my own, since its easier)
draw a simple timeline can be drawn out like the kind you'd see in history documentaries.
it shows 10 major events in your life (like the year you were born, when your sibling was born, etc.)
now make those events more specific in between. my example:
< | --- | ------------- | --------- | > etc.
2004 2005 2009 2010
birth sister's first end vacation
birth vacation
((((((((you can also add months of the year.)))))))))
then add small details in between these events, like first tooth or new clothes.
now you can make this sort of one-word-summary of some events. something like 2009-2010 "astonishing" or whatever.
based off of this, you then make a narrative story of your life history. yknow, the kind thats from a 3rd person POV.
use a title thats interesting and unique (like amazing path of life or something, i dunno)
it says it has to be at leat 3 paragraphs, each with 3+ sentences. so it shouldn't be that long after making the timeline!
in a way, you could consider this your "life novel" but its in a story fashion.
the timeline is there to make it easy to see the big picture.
just comment if you need anything else :D