"Experience" implies being affected by what one meets with: to experience a change of heart.
"Life" is human existence, relationships, or activity in general: real life, everyday life, a manner of living.
"Expecting" is to look forward to the probable occurrence or appearance of: expecting a call, expects sunshine on Sunday.
"Change" is to make the form, nature, content, future course, etc. of something different from what it is or from what it would be if left alone: to change one's name, to change one's opinion, to change the course of history.