שמוני נוטרה את הכרמים - כרמי שלי לא נטרתי
They made me guard the vineyards but my own vineyard I haven't guarded.
Shir Hashirim
Many people are doing things in life that aren't really them. Society or other circumstances often compel a person to be involved in activities for which he feels no passion or excitement. Sort of like guarding someone else's vineyard [i.e. doing something foreign to me] and not my very own.
Fascinating. The first letters of the aforementioned pasuk read "Sinah Nichshal" - Hatred, Failure.
[Sefer Mibsari Echeze Eloka]