We all know him: the guy who bets only favorites, only dogs, only home teams, only televised games. The approach is limiting. Instead, try to be open to any kind of situation that offers an edge. Bet first and second halves. If you like the two teams' offenses and can bet that the score will total more than 19½ in the first half, that's obviously better than betting it will go over 40 in the game.
6. Thou Shall Not Pace Thyself
You get the most favorable numbers early in the season. Linemakers don't know how good a team is, and their lines reflect their uncertainty. The further into the season, the sharper the lines will be. By week 14, they'll be solid.
Now, go forth and prosper.