Tempo, Tempo
One of the easiest way to hit it straight and long is tempo. Conquer that and you will be very successful. But just how does someone work on tempo? One of the easy ways is just to weight down an old driver or 5 or 6 iron ( you can easily do that by adding solder to the head). This added weight will cause two things to happen. A slow in-tempo swing and a reinforcement of taking a divit in the irons. Try each one while hitting range balls. Take normal swings while hitting. After a few swings, then transfer to your driver or irons and produce the same swing. Oh yeah! the ball will fry just as far but with less slice or hook. The more you swing the weighted club, the easier it gets. Try it for yourself but don't tell your buddies. Just show them!