Martha was distracted with much serving....
But Mary has chosen that good part, which
will not be taken away from her.

Luke 11:40-42 NKJV

Martha is worried about something good. She's having Jesus over for dinner. She's literally serving God. Her aim was to please Jesus. But she made a common, yet dangerous mistake. As she began to work for him, her work became more important than her Lord. What began as a way to serve Jesus, slowly and subtly became a way to serve self.... She has forgotten that the meal is to honor Jesus, not Martha....

It's easy to forget who is the servant and who is to be served.

He Still Moves Stones
-Max Lucado