[header] How to write a letter to your future self [title] Choose an age. [step] Before doing anything else, decide how old you want your future self to be when you read this letter. You may want to read the letter when you're 18 , 25, or 30 years old. 
Choosing an age will help you define the goals you want to achieve by that time in your life. [substeps] You may want to choose an age that puts you in different circumstances than you are currently in.