1. I think you shouldn't feel obligated to apologize so much! Especially for not keeping up every day on your journal. I can understand after... maybe a month's absence, especially if you post frequently, but otherwise, don't worry about us! We'll still be waiting for any delicious bit of Japan+You you give us ^_^
2. You may be having a quarterlife crisis. Maybe a bit later (as we in my age bracket seem to be having them EARLIER) but you just might be in a sort of limbo right now - you're done with school, you're doing a job in a place you might not want to ever really call Home. I'm pretty sure everyone who finished school "FOR GOOD" feels lost after awhile, because they spent so much of their lives in school. You did all this preparation and work in coming to Japan, and now that you're comfortable and familiar, you feel... lost? empty? alone? unsure of "the next step"? Maybe there ISN'T any big thing you need to work for! I know as humans we feel like we must ALWAYS be working towards something, but you set such large goals (and met them!) that maybe small goals don't feel as significant to you anymore. And it's okay to get depressed once in awhile, it's natural! ^_^
3. I don't think you're egocentric. And if you were acting that way, I say WHO WOULDN'T BE?! You got to realize your dream and live there and do something COMPLETELY different! That does NOT make you a bad person. Another thing that gets tougher as we grow up is realizing friends get rarer and rarer, because we all get wrapped up in our own lives. And sometimes it takes longer for some people than others to reconcile that and be okay with it. <3
4. Study, study, study! As an American I really admire everyone else who has mastered their own language + English X_X I'm not even fully mastered on hirigana yet!!

I love the ad! So funny! And yay Germany!!! :D I haven't had a chance to comment on your last travel entry but I will right now!