Like you said, you dedicated a lot of time to work, now reserve some of that time to talk to your friends too (call the ones that you lost touch but still like).
Is just a matter of focus too, instead of working long hours everyday, take some time to work on your friendships.
To start 1 night a week to call or meet someone really helps, then go from there.
(also I would suggest for you to not drink alone, you could create a rule to only drink if someone is joining you, seriously, don't drink alone.)
I think that file upload could be interesting. :D
Maybe some GitHub integration, like create lesson directly from Rails rep. (but not exacly importante this one!)
It's cool, but needs a lot of design, it's very raw yet.
One other thing, the program should not allow me to click anywhere, like, if I start to make a word in horizontal and them click 4 columns on the vertical he shoul not compute that, or something like this... (I don't know if you can understand this without some screenshot)
Anki way makes more sense.