Random blurb about spelling

There are certain times in my life when I just have trouble spelling certain words.  In high school, I always wanted to put extra letters into schedule.  A few years ago, I had trouble remembering that traveling only has one "l".  Currently, I keep wanting to put an extra "i" after the "l" in similar.  Fortunately, once I get it through my brain that a certain word is spelled a certain way, it doesn't take terribly long for the message to get down to my fingers and then I don't have any more problems with that word.  But then a new spelling issue comes up.  Thank goodness for spell check.