social skills deficit #87 - goodbyes

what should i say?  how much of a speech should it be?  in what amount of detail will i tell him/her about how much i appreciate him/her?  of the things i feel like i should say, why haven't i said them already?  what kept me from affirming them regularly in our day-to-day life before this farewell?  what if he/she is uncomfortable with x level of affection?   hug?  handshake?  text message?  facebook message?  who will be most disappointed if i forget or don't get a chance to say goodbye to them?  are these concerns even warranted, given the x length of absence?

i admire the people who don't have these qualms.