absolutely yes it is a sacrifice! Im a big fan of  OFW people who choose to work abroad so that they can give the needs of their family to have a better life. First, you should have a big goal and determination before going abroad, working abroad with different culture and standard is a big adjustment. No family to cheer you up on your success, must fight homesickness when it comes. It is a big sacrifice. Take care, and God bless to all OFW.