We have a lot in common. I am a boredom/stress eater, and mid afternoond (2-4) is the worst time of the day for me, and I'm at home so it's easy to eat.
My tactics for the 2-4 time period are:
Try to stay busy
Chew gum
Have a drink. If I am nursing a big glass of water or something, I can avoid eating
Having a big dose of fiber. If I put 2 tsp metamucil in a big glass of water, I feel pretty full for quite a while. Hard to eat when you already feel stuffed. I'm not trying to defeat actual hunger with this one, just that bored "head hunger".
As far as getting started, that is the hardest part for me. I do not pre plan my meals, although I have tried it and it does work. I am just not a planner. If you are, try it!
Being more of a fly by the seat of my pants person, I just jump into counting. I use the daily plate at livestrong.com. It drives me nuts sometimes, but it has the best database and I hate having to enter stuff in myself.
The only other thing I think is important is to remember not to quit if you eat something you feel you shouldn't have. Always treat the next thing you put into your mouth as if it didn't happen. Don't fall into the trap of "well I blew it at lunch so I might as well blow it at dinner too."
Good luck