I believe it means that you are **Doing Something Important** or risked something dear to you to do something else.
"I **Moved Worlds** to help a friend with Cancer" May be a good example, but it can also mean "I **Moved Worlds** Across the Galaxy" Which isn't physically Realistic. but is a representation. "I **Moved Worlds** to Mars" Is a final example representing physically moving to another planet.

Edit: When loki speaks in his mind about Moving Worlds, he says Conviction, and the First definition is what represents this as stated above, similar to **"I Moved Worlds to help a friend with Cancer"**