Ever wondered how exactly you've changed? Jonathan Keller Keller did. Armed with a new-fangled digital camera in 2008, he set out to take a picture of himself everyday.

About 4000 pictures later, Keller has practically created an online archive of his face as it changed everyday since 1998 (except a few days that he spent in Antartica without his camera).

You can see him change froma fresh faced student with glasses and unruly hair and see him switch to contacts and change hairstyles.

He is now a professional artist who goes by JK Keller and has vowed to take pictures everyday in a work that remains incomplete till the end of his life

one of his latest pictures