Lady luck is certainly going to have a hand in deciding how you fare at the tables, but her presence won't ever be the only determining factor. Poker is all about how you approach the game, so you're going to need to combine a poker odds calculator with experience and some knowledge of the game.
Master the art of bluffing, study various poker game strategies, and most importantly log some hours at the table, and you'll find that your chances of winning will increase rapidly.