
Embark
Initiating Action
 Used when someone decides to take the first step in a series or process. 
After years of planning, he's finally ready to embark on his PhD.
 Personal Journeys
 Often used metaphorically to refer to the start of personal endeavors or life changes. 
She's about to embark on motherhood.
 Long-term Commitment
 Suggests a commitment to a long and perhaps challenging process. 
They're ready to embark on a three-year research project.