What is the difference between
'I am currently busy with family stuff so I really don't know when is a good time to catch up.
Good Luck in all your endeavors'
versus
'I am currently busy with family stuff so I really don't know when is a good time to catch up.
Good Luck to all your endeavors'?
The first one sounds pleasant. The second one sounds like a good bye.
Does keyword 'really' have a role here?