It's not a super drug that magically fixes everything, it just moves stuff closer into realm of possibility, I sometimes still procrastinate, now with lazer sharp focus into the thing I'm procrastinating with, so it still takes a lot of discipline to begin doing productive things, but once I do I no longer have to continously fight myself to keep at it.
As per side effects, I don't really have any, the only thing I have noticed is that I have to choose the dosage carefully, as it flactuates a lot, some days I can get by on 18mg, some days 36+18 feels as if I haven't taken anything, as I'm told it is very personal and you have to find your rhythm with it.
As a bonus, despite getting enough sleep, I also have been drowsy during the day for as long as I remember and it was always difficult to fight through it (excessive amounts of sugar and energy drinks in my case). Concerta has fixed that instantly.