How about writing an e-mail to your future self and sending him or her a time capsule?
Step 1: Decide on the day and year when you want to receive the e-mail
Step 2: Explain your future self what your life plans are.
Step 3: Tell him or her what you think your future life will be like.
Step 4: Give him or her advice: "You should always remember to..."
Step 5: Tell him or her where your time capsule is hidden and what's in it.
Now, go to http://www.futureme.org/ and send this message to your future you!
TIPS: Pick an e-mail address which you think you will keep for a long time so that you do receive the message in the future! You should believe in yourself, be ambitious!