Does anyone have personal/practical suggestions of how to increase one's simcha in Adar? (related)
Why do Shuls put up notices saying משנכנס אדר מרבים בשמחה ? Do we think that a notice will change our mood? And if so, why not put up a notice in Elul saying that the Yom HaDin is coming?
Rama (695:2) quotes from the Maharil (though I don't see it there): וחייב במשתה ושמחה קצת בב׳ ימים י״ד וט״ו and one must have a drinking party and joy, a little, on two days: the fourteenth and ...