Step 1: Birth
Step 2: Life
Step 3: Death
Subcatagory 1 (to be spliced between step 1 and 2): Infantile years... Teething, crying and shitting yourself till you figure out how to flush.
Subcatagory 2 (to be spliced between step 2 and 3):
Grow up, get a job or become homeless (proceed to step 3 directly if job=null). Have family or live alone (family proceeds to subcatagory 3, which is yet to be determined).
Subcatagory 3 (to be spliced between Subcat2 and Step 3): unknown.
At present time Subcatagory 2 is underdevelopment.