My tactic is to do some (3-10) tactics a day, no matter which they are. Discovered check, unsound sacrifice, back rank mate... I try to make all tactics here and then maybe some on Chess Tempo.
For me, the problem/main difference between tactics and real game is, that in real game you don't know if you can win something or not, at tactics you almost every time win something! :)
What is the best way to study tactics? Should I focus on a few a day, or work on as many as I have time for? Must they be theme orientated like just forks or discovered checks or random? What have you guys found more effective for you?