Here's the challenge: in three parts...
1) PoD: you start with a historical PoD* no earlier than your 13th birthday, and note its effects
2) OTL: you give an account of part of your life in OTL, that you then...
3) TTL: note how the changes in the world would affect your life
*something to create an ATL at large scale (geopolitics, nation, economy, industry, etc)