I agree with Faith; you can do it that way or get a pill minder - one of those boxes that are labeled for every day of the week, then divy your pills out, one for each day. If the pill for that day is gone, you took it, if not, you didn't. Either that, or keep a slip of paper/notebook near your pills and write down the date/time each time you take your pill.
Put your pill and a glass of water on your nightstand every night. If it works for you, set your alarm for 30-60 minutes before you get up, take the pill and go back to sleep.
Regardless, of how you want to do it, if you leave one pill out and it's gone, you know you took it. :)