For the person struggling with time management: Try setting your timer, then physically placing that timer across the room. Having to get up can help break the connection to what you're focusing on. Furthermore, if you give yourself a pep-talk and try to encourage yourself to do what need to (for example, "Okay, so now I really have to stop playing Civ. I'm going to get up, go take out the garbage, and then I can play some more. I can do this.") it helps to convince you into action.