Weightlifting Fairy Kim Bok Joo is such a comfort drama! I was feeling very down past few weeks , rewatched it for fourth time,still felt refreshed...
This drama always made me so happy about life and friendship! This is pure show
Specially the end quote:

"Everyone has a youth. A time that’s more beautiful because it’s awkward and clumsy, a time that shines brilliantly. A time when you’re not afraid of anything because you have nothing to lose, and a time when you’re excited because you can have anything, everything. That’s now, age 24, my youth. Although I’m still uneasy and nervous, I’m perfect without needing anything else.” - Kim Bok Joo

Other shows I have rewatched for this reasons are Home Town Cha Cha Cha and Whats wrong with secretary kim ,but those show have different aspect and genre caveat. This show resonate more with you when you recently graduated...