Not similar AT ALL but it's a recommendation because of the male lead. Jung Hae In portrays similar characters in both; kind, compassionate, and somewhat hurt male lead. PLUS Hae In is amazing in both dramas. Highly recommend watching this before seeing the rest of A Piece of Your Mind. Must have a thirst for more of his work lol

Main characters both connect through AI;
Don't know each other prior to discovering AI (but in A Piece of Your Mind they meet early on but just in passing);

A Piece of Your Mind just started so no more similarities but we got time to discover more...

They both show how there are both failures and successes in life through ones day-to-day job. Both the main characters are lost in the beginning but through their companies' hard ships they flourish.