[Stuck]

So I've been playing limit hold'em for a while, and my basic strategy has been to get as much money in the pot when I think I'm ahead. But I keep coming across the idea that occasionally it might not be right to raise a bettor on the flop, because you're unable to raise sufficiently to protect your hand, and instead wait until the turn, where draws will be unable to correctly call your raise. But then when I think about it some more, it seems like a case of winning more pots, but not winning more money. Don't you want them to call on the flop, even though they may then have odds to call on the turn as well, since, even though they have good pot odds, you're still more likely to win the pot than they are? Can someone explain to me where I'm going wrong in thinking about this? Thanks!